Dyfyniad APA

Underwood, E. J. (1956). Trace elements in human and animal nutrition. Academic Press Inc.

Dyfyniad Arddull Chicago

Underwood, Eric J. Trace Elements in Human and Animal Nutrition. New York: Academic Press Inc, 1956.

Dyfyniad MLA

Underwood, Eric J. Trace Elements in Human and Animal Nutrition. Academic Press Inc, 1956.

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