Dyfyniad APA

Troeh, F. R. (2003). Dictionary of agricultural and environmental science. Ames, Iowa: Iowa State Press.

Dyfyniad Arddull Chicago

Troeh, Frederick R. Dictionary of Agricultural and Environmental Science. Ames, Iowa: Iowa State Press, 2003.

Dyfyniad MLA

Troeh, Frederick R. Dictionary of Agricultural and Environmental Science. Ames, Iowa: Iowa State Press, 2003.

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