Text ( visual ) : unmediated Williams obstetrics. -- 18th ed. / F. Gary Cunningham, Paul C. MacDonald, Norman F. Grant. -- London : Prentice-Hall International , c1989. -- viii, 984 p. : ill., port. ; 29 cm. -- Includes bibliographical references and index. -- ISBN 0838597378 ; (BA13424626) ; https://ci.nii.ac.jp/ncid/BA13424626 Author Heading(s): Williams, J. Whitridge (John Whitridge) ; Cunningham, F. Gary ; MacDonald, Paul C. ; Gant, Norman F.. -- Classification(s): LCC : RG524 ; DC20 : 618.2. -- Subject Heading(s): PRECIS : Obstetrics ; LCSH : Obstetrics