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Dyfyniad Arddull ChicagoVaughan, Adam S., Michael R. Kramer, and Michele Casper. Geographic Disparities in Declining Rates of Heart Disease Mortality in the Southern United States, 1973–2010. Centers for Disease Control and Prevention, 2014.
Dyfyniad MLAVaughan, Adam S., Michael R. Kramer, and Michele Casper. Geographic Disparities in Declining Rates of Heart Disease Mortality in the Southern United States, 1973–2010. Centers for Disease Control and Prevention, 2014.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.