Spring, Joel
American education
McGraw-Hill, 2008
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Spring, Joel
American education / Joel Spring
McGraw-Hill, 2004
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Spring, Joel
American education / Joel Spring.
McGraw-Hill, 2002
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Wilcox, Walter W.
Economics of American agriculture
Prentice-Hall, 1951
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Alderfer, E.B.
Economics of American industry
McGraw-Hill, 1950
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