TY - BOOK AU - Kerlinger,Fred N. TI - Foundations of behavioral research: educational and psychological inquiry U1 - 150.72 CY - Islamabad PB - National Book Foundation KW - Psychology KW - Research KW - Educational psychology N1 - Includes bibliographical references; the language and approach of science; sets, relations and variance; probability and statistical inference; designs of research; types of research; measurement; methods of observation and data collection; analysis and interpretations ER -