00393nam a2200145Ia 450000500170000000800410001703700130005804000200007104100130009108400170010410000130012124500690013426000360020330000080023920250326125533.0250326s9999    xx            000 0 und d  aTextbook  aFMSLbengcFMSL  aeng2eng  aS:7 K5qFMSL  aHiggin G 0aPsychodynamics of an inter-group experiencecHiggin G; Bridger H  aLondonbLondon, Tavistockc1965  a56p