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HETEROBASIDION SPP. IN PICEA ABIES UNDERSTORY:<br />
INCIDENCE AND IMPACT ON RADIAL GROWTH OF TREES<br />
Kristaps Gruduls, Tālis Gaitnieks,<br />
Jānis Donis, Imants Liepa<br />
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24 ReseaRch foR RuRal Development 2012