Dyfyniad APA

Ervin, D. E. E. (2002). Public concerns,environmental standards and agricultural trade. CABI publishing.

Dyfyniad Arddull Chicago

Ervin, David E Ed. Public Concerns,environmental Standards and Agricultural Trade. New York: CABI publishing, 2002.

Dyfyniad MLA

Ervin, David E Ed. Public Concerns,environmental Standards and Agricultural Trade. CABI publishing, 2002.

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