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Dyfyniad Arddull ChicagoEcological Basis of Agroforestry. Boca Raton, FL: CRC Press, 2008.
Dyfyniad MLAEcological Basis of Agroforestry. Boca Raton, FL: CRC Press, 2008.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.