Wollenberg, E. K. (1991). Urban markets, and rural resource productivity: Incentives for soil conservation among upland farmers in the Philippines. UMI Dissertation Services.
Citace podle Chicago (17th ed.)Wollenberg, Eva Karolina. Urban Markets, and Rural Resource Productivity: Incentives for Soil Conservation Among Upland Farmers in the Philippines. Ann Arbor, Mich: UMI Dissertation Services, 1991.
Citace podle MLA (9th ed.)Wollenberg, Eva Karolina. Urban Markets, and Rural Resource Productivity: Incentives for Soil Conservation Among Upland Farmers in the Philippines. UMI Dissertation Services, 1991.
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