000 00294nam a22001337a 4500
020 _a978-81-272-5639-5
082 _a660.6
100 _aB.D Singh
245 _aBiotechnology
250 _aFirst Edition,1998
260 _aNew Delhi
_bKalyani publisher
_c1998
300 _a702
942 _cBK
999 _c298390
_d298390