Happel, Stephen K.Australian National University. Centre for Economic Policy Research2025-07-232025-07-239492932100725-430xhttps://hdl.handle.net/1885/733767065Unlike the first half of the twentieth century, the past two decades have witnessed a strong interest in demographic phenomenon by American economists, most notably in the study of fertility.i, 50 p. : ill. ; 21 cm.en-AUAuthor/s retain copyright1985-01