Keeley, Joseph C.
Making inventions pay a practical guide to selling, protecting, manufacturing, and marketing your inventions
McGraw-Hill Book Company, Inc. , 1950
 Buku Teks SO
Keeley, Joseph C.
Making inventions pay a practical guide to selling, protecting, manufacturing, and marketing your inventions
McGraw-Hill Book Company, Inc. , 1950
 Buku Teks SO
Schmookler, Jacob
Patents, invention, and economic change data and selected essays/ Jacob Schmookler
Harvard University Press, 1972
 Buku Teks
Hickman, Bert G.
Quantitative planning of economic policy a conference of the social science research council committee on economic stability
The Brooking Institution , 1965
 Buku Teks
Inventors and discoverers : changing our world
National Geographic Book Service
National Geographic Society, 1988
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