00365nas a2200121   4500008004100000245005000041210004600091300001400137490000700151100002200158700002200180856004100202       1979                        eng d00aThe Emergence of Countercyclical US Fertility0 aEmergence of Countercyclical US Fertility  a318–3280 v691 aButz, William, P.1 aWard, Michael, P.  uhttps://www.jstor.org/stable/1807367