共 50 条
- [1] DIRECT-MAIL ADVERTISING TO DOCTORS JOURNAL OF BUSINESS OF THE UNIVERSITY OF CHICAGO, 1940, 13 (01): : 17 - 38
- [5] A COMPARISON OF DIRECT-MAIL AND MAGAZINE COST IN PHARMACEUTICAL ADVERTISING JOURNAL OF BUSINESS OF THE UNIVERSITY OF CHICAGO, 1945, 18 (02): : 78 - 95