TY  - BOOK
AU  - Conference of "National Bureau of Economic Research", Lanox, Massachusetts, Fall, 1981
AU  - Griliches, Zvi ; ed.
TI  - Research and development patents and productivity; papers
U1  - 338.06 
PY  - 1984///
CY  - Chicago
PB  - Chicago University Press
N1  - (National Bureau of Economic Research Conference, report)
ER  -