000 00371nam a2200133Ia 4500
008 191206s9999 xx 000 0 und d
020 _a395126584
090 _aHM133N35
245 0 _aGroups: Theory and Experience
260 _aHoughton Mifflin
260 _cc[1973]
300 _a"xi, 311 p. illus. 22 cm."
999 _c16094
_d16094