Kuznets Simon Quantitative economic research Trends and problem - New York N B E R USA 1972 - xxii, 93p. cm. - Fiftieth anniversary Colloquium, 7.. National Bureau of Economics Research general series, 96. . Economic research: Retrospect and prospect Source: General Book Subjects--Topical Terms: Mathematical Economics Dewey Class. No.: X;(B) b4, L2