000 00326nam a2200133Ia 4500
008 170324s9999 xx 000 0 und d
082 _a581.2
100 _a"Singh, B.P."
245 0 _aEnvironment and biotechnology
260 _b"Today & Tommorrow's Printers & Publishers,"
260 _c1988
365 _b0.00
942 _cBK
999 _c5745
_d5745