SSA pub
U.S. Dept. of Health, Education, and Welfare, Social Security Administration, Office of the Actuary
Description based on no. 11-11527
Ed. by Social Security Administration, Dept. of Health and Human Services
U.S. depertment of health and human service 1984. SSA pub 13-11871
所蔵館1館
U.S. department of health and human services 1983 SSA pub 13-11947
所蔵館3館
by Kevin Wells
U.S. Dept. of Health, Education, and Welfare, Social Security Administration, Office of the Actuary 1980 Actuarial study no. 80 , SSA pub no. 11-11527
