Thorn, Gill. Embarazo y parto / [electronic resource] / Gill Thorn ; [traduccion: Cristina Halberstadt]. — Barcelona : : Paidotribo,, [1997?]. — 208 p. : : col. ill. ; 23 cm. Includes index. ISBN: 8480192755 Subjects--Topical Terms: Natural childbirth.Pregnancy. Dewey Class. No.: 618.24