Weekly except for a combined issue at year-end, -2000
Title from caption. and Published by: Ziff Davis Media, -2000.
Accompanied by separately paged supplements, e.g.: Netweek.
Microform, Ann Arbor, Mich., University Microfilms International, [1983?]- 3 microfilm reels ; 35 mm. and Microform. Foster City, CA, Information Access Services, [19__]- microfiches : negative : 11 x 15 cm