00419nam a2200145Ia 450000500170000000800410001708200160005810000190007424500800009326000350017330000090020865000320021794200070024999900170025620240821151602.0240821s9999||||xx |||||||||||||| ||und||  a301.155 GOR  aGordon, Thomas 0aGroup-Centeral leadership : A Way to releasing the creative power of Groups  aBostonbHoughton Mifflinc1955  a366p  aSOCIOLOGY/SOCIAL PSYCHOLOGY  cBK  c33446d33446