World Resources Institute & Cruz, M. C. (1992). Population growth, poverty, and environmental stress: Frontier migration in the Philippines and Costa Rica. World Resources Institute.
Citace podle Chicago (17th ed.)World Resources Institute a Maria Concepcion Cruz. Population Growth, Poverty, and Environmental Stress: Frontier Migration in the Philippines and Costa Rica. [Washington, D.C.]: World Resources Institute, 1992.
Citace podle MLA (9th ed.)World Resources Institute a Maria Concepcion Cruz. Population Growth, Poverty, and Environmental Stress: Frontier Migration in the Philippines and Costa Rica. World Resources Institute, 1992.
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