000 00293nam a22001217a 4500
050 _aHC 79
_b.E5T7 2012
100 _aTrivedi, P. R.
245 _aEnvironment
_cP. R. Trivedi
260 _aNew Delhi
_bAPH Publishing
_c2012
300 _a358p.: ill.;
_bindex
650 _aEnvironment
942 _cCF
999 _c3248
_d3248