000 00426 a2200169 4500
020 _a8170416825
082 _a363.7
_bTRI
090 _c732
_d821
100 _aTrivedi R.N.
245 _a A texbook of enviromental science
260 _aNew Delhi
_bAnmol Publications
_c1993
_g1993
300 _a410p.
_c21cm
650 _aASSOCITION
650 _aOTHER SOCIAL PROBLEMS & SERVICE
650 _aSOCIAL SERVICE
942 _cSR
999 _c29918
_d29918