TY  - BOOK
AU  - Hippel, Eric Von
TI  - The sources of innovation
SN  - 0195040856
AV  - HC 79.T4 Hip 
PY  - 1988///
CY  - New York
PB  - Oxford University Press
KW  - TECHNOLOGICAL INNOVATIONS--ECONOMIC ASPECTS
KW  - ECONOMICS
N1  - Includes index. -Bibliography: p. 123-130
ER  -