Dasmann, R. F. (1976). Environmental conservation (4th ed.). John Wiley & Sons.
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Dyfyniad Arddull Chicago
Dasmann, Raymond F. Environmental Conservation. 4th ed. New York: John Wiley & Sons, 1976.
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Dyfyniad MLA
Dasmann, Raymond F. Environmental Conservation. 4th ed. John Wiley & Sons, 1976.
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Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.