000 003900000a22001570004500
060 _a100
082 _a575.1 SIN
100 _aSingleton, W Ralph
245 _aElementary genetics
250 _a2
260 _aNewyork, Van Nostrand Reinhold Co
260 _c1967
300 _a576
650 _aGenetics/ Mutation/ Variation-genetics/ Segregation/ Evolution-genetics
942 _cBK
999 _c353389
_d353389