SCHALAIN, BERT H. PROFESSIONAL APPROACH TO MODERN SALESMANSHIP - 0 - NEW YORK-U.S.A. MCGRAW-HILL 1966 - 278 pag. 22 cm - 0 0 . INGLES-LIBRO/PROFESIONAL-MODERNO Subjects--Topical Terms: LINGUISTICA Y FILOSOFIA Dewey Class. No.: 428 / S31