Cita APA

Gregersen, H. M., & Gregersen, H. M. (1987). Guidelines for economic appraisal of watershed management projects. Rome: FAO.

Citación estilo Chicago

Gregersen, Hans M., y Hans M. Gregersen. Guidelines for Economic Appraisal of Watershed Management Projects. Rome: FAO, 1987.

Cita MLA

Gregersen, Hans M., y Hans M. Gregersen. Guidelines for Economic Appraisal of Watershed Management Projects. Rome: FAO, 1987.

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