Rañola, R. F., & Predo, C. (1997). The opportunity cost approach. In two approaches for estimating the on-site costs of soil erosion in the Philippines. Improving smallholder farming systems in Imperata areas of Southeast Asia.
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Cita Chicago Style (17a ed.)
Rañola, Roberto F., y C. Predo. The Opportunity Cost Approach. In Two Approaches for Estimating the On-site Costs of Soil Erosion in the Philippines. Improving Smallholder Farming Systems in Imperata Areas of Southeast Asia. 1997.
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Cita MLA (9a ed.)
Rañola, Roberto F., y C. Predo. The Opportunity Cost Approach. In Two Approaches for Estimating the On-site Costs of Soil Erosion in the Philippines. Improving Smallholder Farming Systems in Imperata Areas of Southeast Asia. 1997.
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