000 00466nam a2200193Ia 4500
008 221105s9999 xx 000 0 und d
020 _a9788121927641
041 _aENGLISH
082 _a628 AST
082 _bAST
100 _aASTHANA DK.; MEERA ASTHANA.
245 0 _aA TEXTBOOK OF ENVIRONMENTAL STUDIES
250 _a1
260 _bS CHAND AND COMPANY LTD.
260 _c2009
300 _a460 p.
650 _aENVIRONMENTAL ENGINEERING
942 _cBK
999 _c27041
_d27041