Olgado, S. (1979). White potato socio-economic and marketing study: Philippines. Special Studies Division, Dept. of Agriculture.
Citace podle Chicago (17th ed.)Olgado, S.S. White Potato Socio-economic and Marketing Study: Philippines. Quezon City: Special Studies Division, Dept. of Agriculture, 1979.
Citace podle MLA (9th ed.)Olgado, S.S. White Potato Socio-economic and Marketing Study: Philippines. Special Studies Division, Dept. of Agriculture, 1979.
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