00384nam a2200133Ia 4500008004100000082001700041100002100058245006100079260004900140300000800189650002000197653001300217653002000230170901s1981    xx            000 0 und d  a300.72bB51R  aBhatnagar, O. P. 0aResearch Methods And Measurements in Behavioral Sciences  aNew DelhibAgricole Publishing Academyc1981  a240  aSocial sciences  aResearch  aSocial sciences