00410nam a2200157Ia 4500003000500000008004100005020002500046040001900071082000700090100001800097245003300115260005200148300001000200546001200210700003000222STCL230729s9999    xx            000 0 und d  a818502355qPhotocopy  aSTCLcSTCLbEN  222  aCorey, Gerald 0aGroups: process and practice  bBrookes Cole Publishing CompanyaMontereyc1977  a252 p  aEnglish  aCorey, Marianne Schneider