00369nam a2200133Ia 450000500170000000800410001708200140005810000200007224500380009225000110013026000230014130000100016465000610017420240821155409.0240821s9999||||xx |||||||||||||| ||und||  a361.6 ROS  aRossi, Peter H. 0aEvaluation: a systematic approach  a2nd ed  aLondonbSagec1982  a351p.  aEvaluation research (social action programs)0-8039-1784-