000 00406nam a22001577a 4500
999 _c7
_d7
008 190821b ||||| |||| 00| 0 eng d
020 _a9788121927642
082 _a333.7
_bAST
100 1 _aAsthana, D. K.
245 1 0 _aA Textbook of Environmental Studies
250 _aRevised Edition
260 _aNew Delhi
_bS. Chand & Company Ltd.
_c2019
300 _axvi, 397p.
700 _aAsthana, Meera
942 _cBK