1Èíñòèòóò ýêîëîãèè Âîëæñêîãî áàññåéíà ÐÀÍ, kseniya-starichkova@yandex.ru2Àñòðàõàíñêèé ãîñóäàðñòâåííûé óíèâåðñèòåò, kerina-best@mail.ru  ðåçóëüòàòå ãèäðîñòðîèòåëüñòâà ê íà÷àëó 70-õ ãîäîâïðîøëîãî âåêà â áàññåéíå ð. Âîëãè ñîõðàíèëñÿëèøü îäèí êðóïíûé ðåãèîí ñ åñòåñòâåííîé ïîéìåííîéðàñòèòåëüíîñòüþ: Âîëãî-Àõòóáèíñêàÿ ïîéìà è äåëüòàð. Âîëãè. Ñóùåñòâîâàíèå çäåñü â çîíå ïóñòûíè èíòðàçîíàëüíûõñîîáùåñòâ ñ ëóãîâîé, áîëîòíîé è ëåñíîé ðàñòèòåëüíîñòüþîáóñëîâëåíû ðåãóëÿðíûìè ïîïóñêàìèâîäû â íèæíèé áüåô Âîëãîãðàäñêîãî ãèäðîóçëà (Áàðìèíè äð., 2002).Ïðåäñòàâëÿåò èíòåðåñ ïåðèîäè÷åñêàÿ îöåíêà èçìåíåíèéëåñíûõ è ðàñòèòåëüíûõ ñîîáùåñòâ Âîëãî-Àõòóáèíñêîéïîéìû ïîä âîçäåéñòâèåì àíòðîïîãåííûõ èïðèðîäíûõ ôàêòîðîâ. 1955 ã. Ïðèêàñïèéñêîé ýêñïåäèöèåé Ìîñêîâñêîãîãîñóäàðñòâåííîãî óíèâåðñèòåòà â ðàéîíå ã. Ëåíèíñêàáûëà çàëîæåíà ãåîáîòàíè÷åñêàÿ òðàíñåêòà (ðèñ.).Ñõåìàòè÷åñêàÿ êàðòà Âîëãî-Àõòóáèíñêîé ïîéìû â ðàéîíå ã. Ëåíèíñêà.Ïóíêòèðîì îáîçíà÷åíà ãåîáîòàíè÷åñêàÿ òðàíñåêòà.Ñîõðàíèëèñü ïîëåâûå äíåâíèêè Ã. Ñ. Øèëîâà è Ë.Â. Ïåòðîâîé ñ îïèñàíèÿìè 135-è ãåîáîòàíè÷åñêèõ ïëîùàäîê,ñäåëàííûõ íà òðàíñåêòå.  äíåâíèêàõ èìååòñÿïîäðîáíàÿ õàðàêòåðèñòèêà ìåñò ãåîáîòàíè÷åñêèõ îïèñàíèéíà êîíòóðå è ñàìè ãåîáîòàíè÷åñêèå îïèñàíèÿ,âêëþ÷àþùèå ïîëíûé ôëîðèñòè÷åñêèé ñïèñîê âèäîâ ñóêàçàíèåì èõ îáèëèÿ. Ïîñëå 1955 ã. òðàíñåêòó ïîâòîðíîïîñåùàëè â 1971, 1982 è 2008 ãã. Ïðè ýòîì, íàñêîëüêîýòî ïîçâîëÿëè ìàòåðèàëû Ã. Ñ. Øèëîâà è Ë. Â. Ïåòðîâîé,ãåîáîòàíè÷åñêèå îïèñàíèÿ â ýòè ãîäû ïðîâîäèëèïðèìåðíî â òåõ æå òî÷êàõ, ÷òî è â 1955 ã.  ïîñëåäíèéãîä ðàáîòû íà òðàíñåêòû êîîðäèíàòû ãåîáîòàíè÷åñêèõïëîùàäîê óñòàíàâëèâàëèñü è çàïèñûâàëèñü c ïîìîùüþGPS-ïðèåìíèêà.Ïðè îáðàáîòêå ðåçóëüòàòîâ ìû ðàññìàòðèâàëè ñëåäóþùååêîëè÷åñòâî îïèñàíèé, ñäåëàííûõ íà òðàíñåêòå:çà 1955 ã. — 106, 1971 ã. — 57, 1982 ã. — 89, 2008 ã. —106.Ñëåäóåò îòìåòèòü, ÷òî â 1955 ã. ëåñíûå ñîîáùåñòâàñîñòàâëÿëè 10% îïèñàíèé, à â 2008 ã. — 14%. Óâåëè÷åíèåïðåäñòàâëåííîñòè ëåñîâ íà òðàíñåêòå ïðîèçîøëî çàñ÷åò óâåëè÷åíèÿ ïëîùàäè, çàíèìàåìûõ ñîîáùåñòâàìèñ äîìèíèðîâàíèåì Fraxinus pennsylvanica. Ýòîò âèäáûë çàâåçåí â äîëèíó Íèæíåé Âîëãè ëåñîâîäàìè â íà-÷àëå 50-õ ãîäîâ ïðîøëîãî âåêà è òåïåðü ðàñïðîñòðàíÿåòñÿñàìîñòîÿòåëüíî, èíîãäà âûòåñíÿÿ Salix alba.Äóáîâûå ëåñà c Quercus robur â öåëîì ñîõðàíèëèñü,íî â èõ òðàâÿíèñòîì ïîêðîâå ñòàëî áîëüøå ðóäåðàëüíûõâèäîâ, òàêèõ êàê: Conyza canadensis, Chenopodiumalbum, Lactuca serriola, Cannabis sativa var. spontanea,Sonchus arvensis, Cichorium intybus, òàêñîíîâ ñåêöèèPolygonum ðîäà Polygonum.Èíòåðåñ ïðåäñòàâëÿåò òî îáñòîÿòåëüñòâî, ÷òî â2008 ã. ìû íåîäíîêðàòíî íàõîäèëè 2 – 4-ëåòíèå ýêçåìïëÿðûäóáîâûõ äåðåâüåâ, ÷åãî â 1971 ã. è 1982 ã. íå îòìå-÷àëîñü. Íàëè÷èå ñåìåííîãî âîçîáíîâëåíèÿ äóáà ñâÿçàíîñ ðåçêèì ñîêðàùåíèåì ïàñòáèùíîé íàãðóçêè, â ðåçóëüòàòåñîêðàùåíèÿ ïîãîëîâüÿ ñêîòà.Ðàáîòà âûïîëíåíà ïðè ïîääåðæêå ãðàíòà ÐÔÔȹ 09-05-00183.1. Áàðìèí À. Í., ÃîëóáÂ.Á., Äîðìèäîíòîâà Ã. Í., Ëûñåíêî Ò. Ì.Îöåíêà äèíàìèêè òðàâÿíîé ðàñòèòåëüíîñòè Âîëãî-Àõòóáèíñêîéïîéìû âî âòîðîé ïîëîâèíå XX ñòîëåòèÿ // Áþëë. ÌÎÈÏ. Îòä.áèîë. 2002. Ò. 107. Âûï. 4. Ñ. 82 – 86.Àãðàðíàÿ Ðîññèÿ. <strong>2009</strong>. Ñïåöèàëüíûé âûïóñê 43
1Èíñòèòóò áèîëîãèè ÓÍÖ ÐÀÍ2ÔÃÓ Þæíî-Óðàëüñêèé ãîñóäàðñòâåííûé ïðèðîäíûé çàïîâåäíèê Íà òåððèòîðèè Þæíî-Óðàëüñêîãî ãîñóäàðñòâåííîãîïðèðîäíîãî çàïîâåäíèêà (ÞÓÃÏÇ) â ðàìêàõ íàó÷íîéòåìû «Ìîíèòîðèíã ëåñíûõ ýêîñèñòåì ïðè çàïîâåäíîìðåæèìå» ñ 1993 ã. ïðîèçâîäÿòñÿ èññëåäîâàíèÿ ñòðóêòóðûè ñîñòîÿíèÿ ëåñíûõ ýêîñèñòåì, à òàêæå îñîáåííîñòåéåñòåñòâåííîãî âîçîáíîâëåíèÿ â íàèáîëåå ðàñïðîñòðàíåííûõòèïàõ ëåñà. Èññëåäîâàíèÿìè îõâà÷åíû êîðåííûåè óñëîâíî-êîðåííûå òèïû ëåñà, à òàêæå ïðîèçâîäíûåëåñíûå ñîîáùåñòâà, âîçíèêøèå íà èõ ìåñòå âðåçóëüòàòå ñïëîøíûõ ðóáîê (2, 3). Ïî÷âû ÞÓÃÏÇ ðàíååíå èññëåäîâàëèñü. Îòäåëüíûå ýêñïåäèöèîííûå ïî÷âåííûåèññëåäîâàíèÿ ïðîâåäåíû íà ñîïðåäåëüíûõ ñÞÓÃÏÇ òåððèòîðèÿõ (4).Ñîãëàñíî ïî÷âåííîé êàðòå Ðåñïóáëèêè Áàøêîðòîñòàíâ çàïàäíîé ÷àñòè ÞÓÃÏÇ (ðàéîí øèðîêîëèñòâåííî-õâîéíûõëåñîâ) ðàñïðîñòðàíåíû ãîðíî-ëåñíûå ñåðûåè ãîðíî-ëåñíûå áóðûå ñëàáîðàçâèòûå ïî÷âû (4). Â2008 ã. â íàèáîëåå ðàñïðîñòðàíåííûõ òèïàõ ëåñîðàñòèòåëüíûõóñëîâèé (íà ñêëîíàõ ðàçëè÷íûõ ýêñïîçèöèé èêðóòèçíû, â ðàçëè÷íûõ ÷àñòÿõ òîïîãðàôè÷åñêîãî ïðîôèëÿ)çàëîæåíî 14 ïî÷âåííûõ ðàçðåçîâ. Ìåñòîïîëîæåíèåðàçðåçîâ — õð. Áåëÿãóø (âåðøèíà, âåðõíèå ÷àñòèçàïàäíîãî è âîñòî÷íîãî ñêëîíîâ), õð. Íàðû (âåðõíÿÿ èñðåäíÿÿ ÷àñòè çàïàäíîãî ñêëîíà), õð. Ì. ßìàíòàó (âåðõíÿÿ÷àñòü âîñòî÷íîãî ñêëîíà, ñðåäíÿÿ è íèæíÿÿ ÷àñòèçàïàäíîãî ñêëîíà, íèæíèå ÷àñòè ñåâåðíîãî è þæíîãîñêëîíà) ã. Àðêà (ñðåäíÿÿ ÷àñòü þæíîãî ñêëîíà), ìåæãîðíîåïîíèæåíèå ìåæäó õðåáòàìè Ì. ßìàíòàó è Íàðû,êðóòûå áåðåãîâûå ñêëîíû ðå÷íûõ äîëèí ð. Ðåâåòü è Ì.Èíçåð. Ïî÷âåííûå ðàçðåçû çàëîæåíû ïî îáùåïðèíÿòîéìåòîäèêå (5).  îòîáðàííûõ ïî÷âåííûõ îáðàçöàõ îïðåäåëÿëè:ñîäåðæàíèå îáùåãî ãóìóñà ïî Òþðèíó, îáùåãîàçîòà ïî Êúåëäàëþ, ðÍ âîäíîé è ñîëåâîé ñóñïåíçèè —ïîòåíöèîìåòðè÷åñêè, îáìåííûå Ñà 2+ èÌg 2+ —êîìïëåêñîìåòðè÷åñêè(1).Ïî÷âåííûé ïîêðîâ ðàéîíà èññëåäîâàíèÿ ïðåäñòàâëåíãîðíî-ëåñíûìè ñåðûìè ïî÷âàìè, êîòîðûå ñôîðìèðîâàëèñüíà ýëþâèàëüíî-äåëþâèàëüíûõ îòëîæåíèÿõïëîòíûõ ãîðíûõ ïîðîä.  êà÷åñòâå ïî÷âîîáðàçóþùèõïîðîä âûñòóïàþò ïðåèìóùåñòâåííî êèñëûå ìåòàìîðôè÷åñêèåïîðîäû — êâàðöèòû, ïåñ÷àíèêè, õëîðèòîâûåè ãëèíèñòûå ñëàíöû. Àíàëèç ìîðôîëîãè÷åñêèõ îñîáåííîñòåéñâèäåòåëüñòâóåò, ÷òî äëÿ èçó÷åííûõ ïî÷â õàðàêòåðíàìàëàÿ ìîùíîñòü ïî÷âåííîãî ïðîôèëÿ(30 – 70 ñì) è ñèëüíàÿ êàìåíèñòîñòü. Îáëîìêè ïîðîäâñòðå÷àþòñÿ íà ãëóáèíå 20 – 30 ñì, íèæå ïî ïðîôèëþêîëè÷åñòâî èõ çíà÷èòåëüíî óâåëè÷èâàåòñÿ. Ïî÷âåííûéïðîôèëü ñëàáî äèôôåðåíöèðîâàí íà ãåíåòè÷åñêèå ãîðèçîíòû,íå ñîäåðæèò ñâîáîäíûõ êàðáîíàòîâ, îïîäçîëåííîñòüìîðôîëîãè÷åñêè íå âûðàæåíà. Íà ïîâåðõíîñòèïî÷â îáðàçóåòñÿ íåáîëüøîé ìîùíîñòè (2 – 6 ñì)ñëàáîðàçëîæèâøàÿñÿ ïîäñòèëêà, ïîä êîòîðîé îò÷åòëèâîâûäåëÿåòñÿ ïåðåãíîéíî-àêêóìóëÿòèâíûé (ãóìóñîâûé)ãîðèçîíò ìîùíîñòüþ 7 – 15 ñì òåìíî-ñåðîé èëèñåðîé îêðàñêè îðåõîâàòîé èëè çåðíèñòîé ñòðóêòóðû.Ïî ìåõàíè÷åñêîìó ñîñòàâó ïî÷âû îòíîñÿòñÿ ïðåèìóùåñòâåííîê ëåãêèì è ñðåäíèì ñóãëèíêàì, â íèæíåé÷àñòè ïðîôèëÿ — ê òÿæåëûì ñóãëèíêàì è ãëèíàì. Áîëååëåãêèé ìåõàíè÷åñêèé ñîñòàâ èìåþò ïî÷âû, ðàñïðîñòðàíåííûåíà âåðøèíàõ õðåáòîâ, ðàçâèòûå íà ýëþâèè ïåñ-÷àíèêîâ.Ñîäåðæàíèå ãóìóñà â ïî÷âàõ îòíîñèòåëüíî íèçêîå,â ïåðåãíîéíî-àêêóìóëÿòèâíîì ãîðèçîíòå êîëåáëåòñÿ âïðåäåëàõ 2,2 – 7,1% è åãî âåëè÷èíà ðåçêî óìåíüøàåòñÿñ ãëóáèíîé. Ñîäåðæàíèå àçîòà â ýòîì æå âåðõíåì ãîðèçîíòåèçìåíÿåòñÿ â ïðåäåëàõ 700 – 4500 ìã/êã ïî÷âû çàèñêëþ÷åíèåì ðàçðåçà 6 – 08 (âåðõíÿÿ ÷àñòü âîñòî÷íîãîñêëîíà õð. Ì. ßìàíòàó) — âñåãî 90 ìã/êã. Êàê ïðàâèëî,ñîäåðæàíèå îáùåãî àçîòà, êàê è îáùåãî ãóìóñà, ðåçêîóáûâàåò ñ ãëóáèíîé, îäíàêî â íåêîòîðûõ ñëó÷àÿõ íàáëþäàåòñÿîáðàòíàÿ êàðòèíà, ÷òî î÷åâèäíî ñâÿçàíî ñåãî ñëàáûì çàêðåïëåíèåì â ïåðåãíîéíî-àêêóìóëÿòèâíîìãîðèçîíòå è ñîîòâåòñòâåííî èíòåíñèâíûì ïåðåíîñîìâ íèæåëåæàùèå ãîðèçîíòû.Ïî÷âû èññëåäîâàííûõ íàñàæäåíèé õàðàêòåðèçóþòñÿêèñëîé ðåàêöèåé ñðåäû, ïî ïðîôèëþ ïî÷â êèñëîòíîñòüóâåëè÷èâàåòñÿ, ÷òî îáúÿñíÿåòñÿ ñîñòàâîì ìèíåðàëîâïî÷âîîáðàçóþùèõ ïîðîä, ñîäåðæàùèõ â áîëüøèõêîëè÷åñòâàõ êðåìíèé è àëþìèíèé è îòñóòñòâèåìñâîáîäíûõ êàðáîíàòîâ, à òàê æå íåâûñîêèì ñîäåðæàíèåìêàëüöèÿ â ñîñòàâå ïî÷âåííî-ïîãëîùàþùåãî êîìïëåêñà.Ñëåäóåò îòìåòèòü, ÷òî âåëè÷èíà ðÍ ñîëåâîé ñóñïåíçèèïðèìåðíî íà åäèíèöó èëè áîëåå íèæå, ÷åì ðÍâîäíîé ñóñïåíçèè, ÷òî ñâèäåòåëüñòâóåò î çíà÷èòåëüíîéïîòåíöèàëüíîé êèñëîòíîñòè ýòèõ ïî÷â.44 Àãðàðíàÿ Ðîññèÿ. <strong>2009</strong>. Ñïåöèàëüíûé âûïóñê
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Ñðàâíèòåëüíîå èçó÷
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ýòîì óñòîé÷èâîñòü
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Ñîäåðæàíèå àñêîðáè
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Ñîäåðæàíèå àñêîðáè
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Êîìèòåò ïî ëåñíîìó
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èíòåãðàëüíûé ïîêàç
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ÌÐÓ-2 èç ðàñ÷åòà 60 ê
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Ìóðìàíñêèé ãîñóäàð
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VarietyHealthy (H)/Infected(I)% Les
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êîìïëåêñ (ÅÃÑÊ). Ìíî
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Íàðÿäó ñ íåèìåíèåì
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 ýòèõ âûáîðêàõ êîë
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äðåâåñíûõ âèäîâ, â
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ñîòåõíè÷åñêîé àêàä
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1. Ìóëäàøåâ A. A., Êó÷å
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ïåïòèäàçû (LAP, E. C. 3.4.
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ñ÷åò óâåëè÷åíèÿ ãå
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÷åðåø÷àòûé, êëåí îñ
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Ïëîòíîñòü è âëàæíî
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ðàäèàëüíîãî ðîñòà
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Ñðàâíåíèå ìîùíîñòè
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Èç áîëåçíåé â ïëîäî
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5. Ôåäîðîâà À. È. Âëè
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Ðèñ. 1. Ñåçîííàÿ äèí
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Áîòàíè÷åñêèé ñàä-è
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âûáðîñîâ ïàðíèêîâû
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 ñâåæèõ òèïàõ ìåñò
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Òåìíî-ñåðûå ïî÷âû î
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çîâ, ïîä÷åðêèâàÿ ðà
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Ôèëèàë ÔÃÓ «ÂÍÈÈËÌ
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ñòàâëÿåìîé ÃËÖ. Â à
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Ïî âñòðå÷àåìîñòè ë
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Áàøêèðñêèé èíñòèòó
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Òàáëèöà 2. Ðåêîìåíä
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íûõ ñîåäèíåíèé àçî
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Èíñòèòóò áèîëîãèè
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çíà÷åíèÿ. Ïóíêò ïðî
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ëèêòîâûå ñîñíÿêè ó
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øàëî ÷åòûðåõ (300 - 600
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2. Êðàñíîùåêîâ Ã. Ï.
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15 IX 1942, À. Ïëåòíåâà
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æåðòâåííûõ ëóíîê, ñ
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Âåäóùèå ðîäû àëüãî
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Íîðìàòèâû ðåêðåàöè
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âåííûõ ñàíàòîðèåâ
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1979), ðàñïðåäåëåíèå
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Ðèñ. 1. Äèíàìèêà ãîä
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ëè÷åñòâà ðàñõîäóåì
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Ïðîäóêòèâíîñòü íàä
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Áîòàíè÷åñêèé ñîñòà
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Âûõîä áåòóëèíà è ñó
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Âèäÿêèíà À. À., Ñåìå
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Êàøàïîâ Ð. Ø. Ãåîãðà