Ramsgard William C Making system work The psycholoyg of business systems Ramsgard William C - New York John Wiley 1977 - xv, 262p. cm. - Business data processing a wiley sereis . Standard No.: 135,186 Source: Textual Subjects--Topical Terms: ECONOMICS Dewey Class. No.: X:(D65,8(B):3), L7-;1