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Dyfyniad Arddull ChicagoStarr, Cecile. Basic Concepts in Biology. Belmont, CA: Thomson, Brooks/Cole, 2006.
Dyfyniad MLAStarr, Cecile. Basic Concepts in Biology. Belmont, CA: Thomson, Brooks/Cole, 2006.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.