000 003810000a22001570004500
060 _a100
082 _a575.1 SIN
100 _aSingleton, Ralph W
245 _aElementary genetics
250 _a2nd
260 _aNewyork, Van Nostrand Reinhold Co
260 _c1967
300 _a576
650 _aGenetics/gene-mtation/chromosomes-mutation/mutation-genetics
942 _cBK
999 _c215337
_d215337