TY  - BOOK
AU  - Harman,Alvin J.
ED  - Research and Development Corporation, 
TI  - Measurement of technological innovation by firms
T2  - The Rand paper series
PY  - 1975///
CY  - Santa Monica, California
PB  - Rand Corporation
KW  - Technological innovations
KW  - Mathematical models.
N1  - Includes bibliographical references
ER  -