Dyfyniad APA

United States. Department of Agriculture & Hayes, J. (1981). Will there be enough food? The Department.

Dyfyniad Arddull Chicago

United States. Department of Agriculture and Jack Hayes. Will There Be Enough Food? [Washington]: The Department, 1981.

Dyfyniad MLA

United States. Department of Agriculture and Jack Hayes. Will There Be Enough Food? The Department, 1981.

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