LESCHER, JOHN F. ONLINE MARKET RESEARCH:?COS-EFFECTIVE SEARCH OF THE INTERNET AND ON LINE DATABASES / LESCHER, JOHN F. - [S.N] : ADDISON - WESLEY PUBLISHING COMPANY ، 1995 - 269 P Subjects--Topical Terms: MARKETING - RESEARCHON LINE DATABASE Dewey Class. No.: 658.830 / L O