00289nam a2200121Ia 45000030006000000080041000060400015000471000029000622450025000912600022001165460012001380050017001500STCL150530s9999    xx            000 0 und d  aSTCLcSTCL  aEhrich, P.R.; Holm, R.W.  aProcess of evolution  bMcgraw hillc1963  aEnglish20220125170346.0