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Desertificación - Secretaria de Ambiente y Desarrollo Sustentable

Desertificación - Secretaria de Ambiente y Desarrollo Sustentable

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Manual sobre <strong>Desertificación</strong> Secretaría <strong>de</strong> <strong>Ambiente</strong> y <strong>Desarrollo</strong> <strong>Sustentable</strong><br />

Página 3<br />

Fuente: Casas 1998, SAGPyA.CFA 1995, PAN s.a., INTA-GTZ 1995, UNEP 1992, Mensching 1989, Roig 1989,<br />

Wilhelmy & Rohme<strong>de</strong>r 1963, Prego 1961, Aparicio & Difrieri 1959)

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