Zimdahl, R. L. (2006). Agriculture's ethical horizon. Academic Press.
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Dyfyniad Arddull Chicago
Zimdahl, Robert L. Agriculture's Ethical Horizon. Amsterdam ; Boston: Academic Press, 2006.
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Dyfyniad MLA
Zimdahl, Robert L. Agriculture's Ethical Horizon. Academic Press, 2006.
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Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.