TY - RPRT T1 - Is There A Case for a 'Second Demographic Transition'? Three Distinctive Features of the Post-1960 U.S. Fertility Decline AU - Bailey, Martha J. AU - Guldi, Melanie E. AU - Hershbein, Brad J. PY - 2013 DO - 10.3386/w19599 T2 - National Bureau of Economic Research Working Paper Series IS - 19599 CY - Cambridge, MA UR - http://www.nber.org/papers/w19599.pdf PB - National Bureau of Economic Research (NBER) ER -