TY - BOOK AU - MaCurdy,Thomas E. AU - Shoven,John B. TI - Asset allocation and risk allocation : can social security improve its future solvency problem by investing in private securities? AV - HD7125 M322A PY - 1999/// CY - Cambridge, Mass. PB - National Bureau of Economic Research KW - SOCIAL SECURITY KW - UNITED STATES KW - FINANCE KW - PENSION TRUSTS KW - INVESTMENTS KW - ECONOMICS KW - RESEARCH ER -