Text ( visual ) : unmediated A model of births for developing countries and its use in the study of demographic effect of birth control / by Jean-Pierre Bendel. -- Ann Arbor, Mich. : UMI Dissertation Services , c1978. -- xii, 178 p. : ill. ; 23 cm. -- Thesis (Ph.D.)--Carnegie-Mellon University, 1978 ; UMI no.: 7814379 ; Includes bibliographical references (p. 167-178). -- (BA8994655X) ; https://ci.nii.ac.jp/ncid/BA8994655X Author Heading(s): Bendel, Jean-Pierre. -- Subject Heading(s): LCSH : Birth control -- Developing countries ; LCSH : Childbirth -- Developing countries -- Statistics -- Mathematical models