Ewy, Donna. Preparation for childbirth; : a Lamaze guide, [electronic resource] / by Donna and Rodger Ewy.. — Boulder, Colo., : Pruett Pub. Co., [1970]. — xi, 115 p. : illus. 18 x 26 cm. LCCN: 73116549 Nat. Bib. Agency Control No.: 1246777 DNLM Subjects--Topical Terms: Natural childbirth.Natural Childbirth--Popular Works.Pregnancy--Popular Works. LC Class. No.: RG525 / .E97 Dewey Class. No.: 618.2/4 National Library of Medicine Call No.: WQ 150 / E95p 1970