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020 _a9789381335741
082 _a577 PUS-BAS
100 _aPUSHPENDRA
245 0 _aBASICS IN ENVIRONMENTAL STUDIES
250 _a1
260 _bINTERNATIONAL BOOK HOUSE
_c2013
_aNEW DELHI
300 _a202 p.
650 _aENVIRONMENTAL STUDIES
942 _cBK
_2ddc