An economic theory of technological change : the case of patents and the United States railroads, 1871-1950
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書誌事項
An economic theory of technological change : the case of patents and the United States railroads, 1871-1950
(Dissertations in American economic history)
Arno Press, 1978, c1970
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注記
Originally presented as the author's thesis, University of Washington, 1970
Bibliography: p. [140]-145