000 00293nam a2200121Ia 4500
008 220204s9999 xx 000 0 und d
082 _a575
_bSIN
100 _aSINGLETON, W Ralph
245 0 _aElementary genetics.
260 _aToronto
_bVan Nostrand
_c1965
650 _aGenetics
942 _cBK
999 _c20942
_d20942