Inaba, Hisashi An age-structured two-sex model for human population reproduction by first marriage / Hisashi Inaba - Tokyo : Ministry of Health and Welfare (MHW) , 1993 - 22p. : ill. ; 30 cm. - Working paper No. 15 . Includes bibliographical references. Subjects--Topical Terms: Marriage--JapanPopulation Gov. Doc. Class. No.: JP MHW IPP WP-15