Text ( visual ) : unmediated Fertility and marriage in Sri Lanka : some insights from path analysis / Robert W. Hodge, Naohiro Ogawa. -- Tokyo : Nihon University Population Research Institute , 1981. -- vi, 29 p. ; 26 cm. -- (NUPRI research paper series ; no. 6). -- References: p. 28-29. -- (BA19349625) ; https://ci.nii.ac.jp/ncid/BA19349625 Author Heading(s): Hodge, Robert William ; 小川, 直宏