TY - BOOK AU - Wade,Alice AU - Bayo,Francisco Roberto ED - E.U.A. Department of Health and Human Services TI - Social security area population projections 1991 T2 - SSA Pub No. 11-11553 U1 - 368.40973 21 PY - 1992/// CY - Baltimore PB - SSA. Office of the Actuary KW - Seguridad social KW - Estados Unidos N1 - I. Introduction. II Starting population. III Analysis and projections of components of population change. IV Methods. V Results ER -