Epidemiology /
Gordis, Leon, 1934-
Epidemiology / Leon Gordis - 2nd ed. - Philadelphia : W.B. Saunders, c2000. - xii, 308 p. : ill., maps ; 26 cm.
Epidemiology / Leon Gordis - 2nd ed. - Philadelphia : W.B. Saunders, c2000. - xii, 308 p. : ill., maps ; 26 cm.