000 003340000a22001450004500
060 _a100
082 _a575.1 SIN
100 _aSingleton, Ralph W
245 _aElementary genetics
260 _aToronto, D Van nostrand Company Inc
260 _c1962
300 _a482
650 _aGenetics/ Mutation/ Chromosome
942 _cBK
999 _c211686
_d211686