Hakim, Catherine . Research design : strategies and choices in the design of social research / Catherine Hakim. - London : Allen and Unwin , 1987. - xii,211p. : ill,tables and diagrams ; 22cm . Includes index ISBN: Rs. 217.48 (Pbk) Subjects--Index Terms: SOCIAL SCIENCES-RESEARCH-METHODOLOGY Dewey Class. No.: 300.72 / HAK/R