TY  - BOOK
AU  - Hippel, Eric von
TI  - The sources of innovation
SN  - 9780195094220
SN  - 86028620
U1  - 338.06 HIP 
PY  - 1988///
CY  - Oxford
PB  - Oxford University Press
KW  - Technological innovations - Economic aspects
N1  - Includes index. Bibliography: p. 123-130
ER  -