Benson, Ralph C. Handbook of obstetrics and gynecology / Ralph C. Benson, Martín L. Pernoll - Novena edición - New York : McGraw-Hill, 1994 - x, 817 p. : il ISBN: 0071054057 Subjects--Topical Terms: ObstetriciaGinecología Dewey Class. No.: 618.2 B474h 1994