Παραπομπή APA

Norman, D. W. (1994). Farming systems development and soil conservation. Rome: Food and Agriculture Organization of the United Nations.

Παραπομπή Chicago Style

Norman, D. W. Farming Systems Development and Soil Conservation. Rome: Food and Agriculture Organization of the United Nations, 1994.

Παραπομπή MLA

Norman, D. W. Farming Systems Development and Soil Conservation. Rome: Food and Agriculture Organization of the United Nations, 1994.

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