Research and Information Institute for Agricultural Economics Hungary & Committee for Agricultural Economics, Hungarian Academy of Sciences. (2003). Studies in agricultural economics 2003: No99.
Tohutoru Kātū Chicago (17th ed.)Research and Information Institute for Agricultural Economics Hungary me Hungarian Academy of Sciences Committee for Agricultural Economics. Studies in Agricultural Economics 2003: No99. 2003.
Tohutoro MLA (9th ed.)Research and Information Institute for Agricultural Economics Hungary me Hungarian Academy of Sciences Committee for Agricultural Economics. Studies in Agricultural Economics 2003: No99. 2003.
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