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Dyfyniad Arddull ChicagoLancaster, H. O. Quantitative Methods in Biological and Medical Sciences: A Historical Essay. New York: Springer-Verlag, 1994.
Dyfyniad MLALancaster, H. O. Quantitative Methods in Biological and Medical Sciences: A Historical Essay. Springer-Verlag, 1994.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.