| 1 |
no. 76
Freight transportation in the Soviet Union : including comparisons with the United States / Ernest W. Williams, Jr. ; with the assistance of Gerge Novak and Holland Hunter
Princeton : Princeton Universitiy Press , 1962
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| 2 |
no. 87
The service economy / Victor R. Fuchs ; assisted by Irving F. Leveson
New York : National Bureau of Economic Research. - New York : Distributed by Columbia University Press , 1968
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| 3 |
96 . Economic research : retrospect and prospect . Fiftieth anniversary colloquium ; 6
Human resources / [by Theodore W. Schultz]
: pbk. - New York : National Bureau of Economic Research : Distributed by Columbia University Press , 1972
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| 4 |
96 . Economic research : retrospect and prospect . Fiftieth Anniversary Colloquium ; 7
Quantitative economic research : trends and problems / by Simon Kuznets
: pbk. - New York : National Bureau of Economic Research ; distributed by Columbia University Press , 1972
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