Marketing research and analysis [by] Lyndon O. Brown [and] Leland L. Beik. Brown, Lyndon O. Beik, Leland Larson, joint author. Marketing research. HF5415.2 .B7 1969 658.83 BRM Bibliography: p. 609-613. New York, Ronald Press Co. [1969] [1969] 1969 Text vi, 624 p. eng