Hippel, Eric von The sources of innovation Eric von Hippel - Oxford Oxford University Press c1988 - xi, 218 p. : ill. ; 25 cm Includes index. Bibliography: p. 123-130 ISBN: 9780195094220 ISSN: 86028620 Subjects--Topical Terms: Technological innovations - Economic aspects Dewey Class. No.: 338.06 HIP