@book{ 0-128370076, title = {Gruppenpsychologie für Erzieher, Lehrer und Gruppenleiter}, series = {Gruppenpädagogik, Gruppendynamik}, author = {Sjølund, Arne and Nothardt, Fritz and Meyer, Ernst}, editor = {Nothardt, Fritz}, editor = {Meyer, Ernst}, editor = {Sjølund, Arne}, address = {Heidelberg}, publisher = {Quelle & Meyer}, year = {1974}, isbn = {3494007659}, language = {German}, language = {Danish}, url = {https://katalog.bibliothek.tu-chemnitz.de/Record/0-128370076} }