TY  - BOOK
AU  - Bayo Francisco
AU  - Ritchie W D
ED  - U S. Social Security Board. Office of the Actuary
TI  - Long range cost estimates for lod-age, survivors and disability insurance system
U1  - 368.40973 
PY  - 1974///
KW  - Disability insurance
KW  - Social insurance
ER  -