Dyfyniad APA

Shapiro, S. A. (1971). Our changing fisheries. United States. Department of Commerce.

Dyfyniad Arddull Chicago

Shapiro, Sidney A. Our Changing Fisheries. Washington, D.C: United States. Department of Commerce, 1971.

Dyfyniad MLA

Shapiro, Sidney A. Our Changing Fisheries. United States. Department of Commerce, 1971.

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