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Dyfyniad Arddull ChicagoLa Vecchia, C. Patterns of Cigarette Smoking and Trends in Lung Cancer Mortality in Italy. 1985.
Dyfyniad MLALa Vecchia, C. Patterns of Cigarette Smoking and Trends in Lung Cancer Mortality in Italy. 1985.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.