01098cam a22002411 4500 20181209225141.0 720131s1962 njua b 100 0 eng 62007044 (OCoLC)231128 DLC ODaWU OCoLC BD-DhBPA 330 NAR 1961 Universities--National Bureau Committee for Economic Research. 24045 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. National Bureau of Economic Research. Special conference series, 13 "A report of the National Bureau of Economic Research, New York." Bibliographical footnotes. Rashid Inventions. 24046 Social Science Research Council (U.S.). Committee on Economic Growth. 24047 ddc BK 8402 8402 0 ddc 0 0 BPATC BPATC GEN 2018-04-08 0 330 NAR 1961 7486 2018-04-08 00:00:00 2018-04-08 BK Rashid