00278nam a2200097 a 450000500170000008200170001710000210003424500690005526000350012430000210015920251203091015.0  a300.72,baru  aArun Kumar Singh  aTests, measurements and research methods in behavioural sciences  aDelhi: Tata Mc-Graw-Hillc1986  axii, 563p.c23cm