Papi, U. (1969). Eco. problems of agriculture in industrial societies. Macmillan.
Chicago-čujuhus (17. p.)Papi, U. Eco. Problems of Agriculture in Industrial Societies. London: Macmillan, 1969.
MLA-čujuhus (9. p.)Papi, U. Eco. Problems of Agriculture in Industrial Societies. Macmillan, 1969.
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