automatic collection and transmission of ... - E-Library - WMO
automatic collection and transmission of ... - E-Library - WMO
automatic collection and transmission of ... - E-Library - WMO
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38 AUTOMATIC HYDROLOGICAL OBSERVATIONSPolGester tube'180 II( 100)Interval <strong>of</strong> snowPolyester tubeIII I••600m~GM counter effective len th 120)Screen PI;> 5mmPlastic boxSource Cs 137m ,r beam2 Pb hemispheresPlastic boxe.