000 00501nam a2200205Ia 4500
008 210210b2018 xxu||||| |||| 00| 0 eng d
020 _a9788121927642
041 _aeng
082 _a574.5 ASTT
100 _aASTHANA (D K)
245 _aTextbook of environmental studies
260 _aNew Delhi
_bS. Chand & Co. Ltd.
_c2018
300 _axvi,397
650 _aTextbook
650 _astudies
650 _aenvironmental
690 _aEcology
700 _aASTHANA (Meera)
906 _a072622
999 _c122447
_d122447