00279nam a2200121Ia 45000030006000000080041000060400015000471000016000622450028000782600022001065460012001280050017001400STCL150530s9999    xx            000 0 und d  aSTCLcSTCL  aBlock, B.C.  aMan microbes and matter  bMcgraw hillc1975  aEnglish20220125170355.0