American Agricultural Economics Association, ebrary, Inc, & Martin, L. R. (1977). Traditional fields of agricultural economics, 1940s to 1970s. Published by the University of Minnesota Press for the American Agricultural Economics Association.
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Chicago-čujuhus (17. p.)
American Agricultural Economics Association, Inc ebrary, juo Lee R. Martin. Traditional Fields of Agricultural Economics, 1940s to 1970s. Minneapolis: Published by the University of Minnesota Press for the American Agricultural Economics Association, 1977.
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MLA-čujuhus (9. p.)
American Agricultural Economics Association, et al. Traditional Fields of Agricultural Economics, 1940s to 1970s. Published by the University of Minnesota Press for the American Agricultural Economics Association, 1977.
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