The rate and direction of inventive activity: economic and social factors;
The rate and direction of inventive activity: economic and social factors; a conference of the Universities-National Bureau Committee for Economic Research and the Committee on Economic Growth of the Social Science Research Council.
- Princeton, Princeton University Press, 1962.
- x, 635 p. diagrs. 24 cm.
"A report of the National Bureau of Economic Research, New York."
Bibliographical footnotes.
62007044
Inventions.
330 / NAR 1961
"A report of the National Bureau of Economic Research, New York."
Bibliographical footnotes.
62007044
Inventions.
330 / NAR 1961