TY - BOOK AU - Churchill, Gilbert A. AU - ED - ED - ED - ED - TI - : methodological foundations SN - 0030892104 (paperback) SN - 2 PY - 1976///;copyright 1976.46 CY - Hinsdale, Illinois PB - The Dryden Press KW - KW - 2 KW - 0 KW - 6 KW - 20 KW - Marketing research N1 - Includes bibliographical references and index; 5; Professional ER -