00449nam a2200169Ia 4500008004100000020001500041082001700056100002300073245003900096250000600135260005300141300000800194650002000202653002400222653001300246653002000259170901s1973    xx            000 0 und d  a0039101452  a300.72bK49F  aKerlinger, Fred N. 0aFoundations of Behavioral Research  a2  aNew YorkbHolt, Rinehart And Winston, Inc.c1973  a741  aSocial sciences  aExtension education  aResearch  aSocial sciences