000 00326nam a2200133Ia 4500
008 151001s9999||||xx |||||||||||||| ||und||
100 _aGovind Prasad
245 _aHandbook of environmental science
250 _a1
260 _b"Discovery publishing housenew ,delhi"
260 _c2012
300 _a225
365 _b21
999 _c1000686
_d1000683