00362nam a2200109Ia 4500008004100000040003800041100001600079245008300095260004500178300001400223653001500237211215s9999    xx            000 0 und d  cJayakar Knowledge Resource Centre  aSchein, E H 0aPersonal and organiztional change throgh group methods: the laboratory approch  bJohn Wiely and Sons, IncaNew Yorkc1965  ax, 376 p.  aPsychology