004580000a22001450004500 US/Wil.C/DP/RP-150 Holfe B.L. Williams College Department of Economics <The> synthesis economic fertility model: a latent variable investigation of some critical attributes Massachusetts US 1990 17p Research paper no. 150 <Fertility> Eng 5319 5319 0 0 0 0 BIDSLDC BIDSLDC GEN 2017-05-08 84087 2017-05-08 1 2017-05-08 BK