Dyfyniad APA

MORGAN, R. (1979). Soil erosion: Topics in applied geography. Longman.

Dyfyniad Arddull Chicago

MORGAN, R.P.C. Soil Erosion: Topics in Applied Geography. London: Longman, 1979.

Dyfyniad MLA

MORGAN, R.P.C. Soil Erosion: Topics in Applied Geography. Longman, 1979.

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