TY  - BOOK
AU  - Griliches Zvi Ed.
TI  - R and D patents and productivity
T2  - National Bureau of Economic Research, Conference Report
SN  - 0226308839
U1  - X9:84.73.N8, M4 
PY  - 1984///
CY  - Chicago
PB  - University of Chicago Press       
KW  - Management
N1  - Bibliography chapterwise
ER  -