Introduction to epidemiology.
Merrill, Ray M.
Introduction to epidemiology. - 6th ed. / Ray M. Merrill. - Sudbury, Mass. : Jones and Bartlett Publishers, c2013 - xi, 417 p. :
9781449665487 (pbk.)
Epidemiology.
Epidemiologic Methods.
Epidemiology.
WA 950
Introduction to epidemiology. - 6th ed. / Ray M. Merrill. - Sudbury, Mass. : Jones and Bartlett Publishers, c2013 - xi, 417 p. :
9781449665487 (pbk.)
Epidemiology.
Epidemiologic Methods.
Epidemiology.
WA 950