Nortman, Dorothy Estimating potential contraceptive demand : an improved method of measurement / Dorothy Nortman - New York : Population Council (PC) , 1982 - 38p. : ill. ; 22 cm. - Working papers (Population Council. Center for Policy Studies) No. 82 . Includes bibliographical references. Subjects--Topical Terms: Birth control--Mathematical models. Gov. Doc. Class. No.: US PC CPS WP-82