000 00285nam a2200133Ia 4500
008 160316s1976 xxu||||| |||| 00| 0 eng d
020 _a
100 _aDrake , John W
245 _aMutagenisis
250 _a1ST
260 _aPENNSYLVANIA
_bDHSR
_c1976
300 _a363
700 _a
_a
999 _c10062
_d10062