00298nam a2200133Ia 45000030006000000080041000060400015000471000016000622450025000782500010001032600022001135460012001350050017001470STCL150530s9999    xx            000 0 und d  aSTCLcSTCL  aColin, E.C.  aElements of genetics  aThird  bMcgraw hillc1956  aEnglish20220125170340.0