000 00321nam a2200145Ia 4500
008 220926s9999 xx 000 0 und d
100 _aKeshaw Trehan
245 0 _aBiotechnology
250 _a2nd RP
260 _aNew Delhi
260 _bWiley Eastern Ltd
260 _c1991
650 _aBiotechnology
942 _cBK
999 _c15185
_d15185