TY  - BOOK
AU  - Hippel,Eric von
TI  - The Sources of innovation
SN  - 0195094220
PY  - 1988///
CY  - New York
PB  - Oxford
KW  - Technological innovations
KW  - Economic aspects
KW  - sears
N1  - Includes index
N2  - Research in economics highlighting the customers' needs
ER  -