Niyomyaht, Satit Differential fertility in Thailand : an analysis of social and economic factors affecting fertility / Satit Niyomyaht - Michigan : Xerox University Microfilms , 1974 - x, 221p. : ill. ; 20 cm. Includes bibliographical references. Subjects--Topical Terms: Fertility--Thailand Dewey Class. No.: Th 312.1 / NIY