1. Modern dynamic approach to product development, study made under auspices of Secretary of Army's research and study fellowship, Sept. 1957-Sept. 1958 [With lists of references]; by Sidney Sobelman. Bookmark Corporate/Agency Authors: Ordnance Corps (Army) and Defense Dept. Publisher: Ordnance Corps (Army) Date: Dec. 1958 SuDoc number: D 105.2:P 94