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, National Bureau of Economic Research Special Conference Series No. 13. Princeton, Princeton University Press, 1962. Pp. xi + 635. $12.50.
1994 ◽
Vol 30
(4)
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pp. 405-406
1932 ◽
Vol 27
(178)
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pp. 188-190
1989 ◽
Vol 9
(4)
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pp. 429-432
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