Landon,B.Mark Gabbe's obstetrics : normal and problem pregnancies / Mark B. Landon - Eighth edition. - Philadelphia, PA : Elsevier, 2021. - xviii, 1257 pages : illustrations (chiefly color) ; 29 cm. Includes bibliographical references and index. ISBN: 9780323608701 (hardcover) Subjects--Topical Terms: --Pregnancy.--Pregnancy Complications.-- Prenatal Care.--Obstetrics -- methods. LC Class. No.: RG524 GAB