Elkouri, Edna Asper
BNA Incorporated, 1960
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Elkouri, Frank, author
The bureau of nations affairs, 1997
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Berger, Bernhard, author
Thoson Reuters, 2010
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Prasow, Paul, author
McGraw-Hill, 1983
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Hulgren, Thor
National Bureau of Economic Research; distributed by Columbia University Press, 1965
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