000 00283nam a22001217a 4500
020 _a978932722065
082 _a660.65
_bSIN/B
100 _aB D Singh
245 _aBiotechnology/
_cB D Singh
260 _aNew Delhi:
_bKalyani publishers,
_c1998.
300 _a602p.
_b24cm.
942 _cBK
999 _c3660
_d3660