00441nam a2200157 a 450000500170000008200150001710000240003224500480005626000280010430000230013263000190015596400160017499700110019099900150020195200670021620251202164234.0  a361.4bTRE  aTrecker, Harieigh B  aSocial group workbprinciples and practices  bAssociation Pressc1972  a350 p.b24 cm.cHB  aSocial Science  bcdefg_  a9277 C  c4520d4520  00104070aPUbPUd1998-04-09g181.30l0o361.4 TREp9277yBK