000 00271nam a2200109Ia 4500
008 221129s1994 xx 000 0 und d
041 _aeng
082 _a575.1
100 _aTrehan, K.
_91237056
245 _aBiotechnology
260 _aN.Delhi
_bWiley Eastern Limited
_c1994
999 _c807284
_d807284