000 00494nam a2200217Ia 4500
008 240328s9999 xx 000 0 und d
020 _a9.78812E+12
041 _aENG
082 _a363.73
100 _aAsthana D. K.
245 2 _aA textbook of environmental studies
250 _a2 Ed.
260 _aNew Delhi
260 _bS. Chand And Company Ltd
260 _c2023
300 _axvi, 1 to 397p.
365 _b450
650 _aAIML
700 _aAsthana Meera
942 _cDBK
999 _c36019
_d36019