000 003740000a22001450004500
005 20251028083215.0
082 _a372.83
_bAST
100 _aAsthana, D. K
245 _aa textbook of environmental studies /
_cD. K. Asthana
260 _aNew Delhi :
_bS Chand
_c2010
300 _a460p.
_c22cm
504 _aInclude Index
650 _aEnvironmental Engineering
942 _cBK
999 _c28635
_d28635