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Dyfyniad Arddull ChicagoMader, Sylvia S. Human Biology: Laboratory Manual. Boston: McGraw Hill, Higher Education, 2008.
Dyfyniad MLAMader, Sylvia S. Human Biology: Laboratory Manual. Boston: McGraw Hill, Higher Education, 2008.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.