Campbell, Dona. Measuring maternal mortality and morbidity: levels and trends/ Dona Campbell and Wendy J, Graham - Londres, Ing. : Masson, 1990. - 70p. ISBN: 90-2657-33-X Subjects--Topical Terms: Efectos Epidemiológicos.Epidemiología-Mujeres. Dewey Class. No.: 614.4 / C127m