TY - BOOK AU - Mason, Emanuel J. AU - Bramble, William J. ED - ED - ED - ED - TI - : concepts and methods SN - 0697171051 (hardback) SN - 2 PY - 0000///46 CY - PB - KW - KW - 2 KW - 0 KW - 6 KW - 20 KW - Research;Methodology.;Research;Methodology.;Research;Methodology KW - Education;Social sciences;Psychology N1 - Includes bibliographical references and indexes; 5 ER -