An Empirical analysis of household activity patterns /

"DOT/RSPA/DMA-50/83/19."

Trends in federal transportation financial activity, fiscal years 1970-1979 : report number 3 : projections of federal transportation obligations, 1980-1989 (based on 1970-1979 historical patterns) /

"DOT-P-10-80-22"--Cover.

The earnings tests and work patterns in four nations : an analysis of why work activity among older men does not increase when the earnings test is removed or liberalized /

Prepared for Social Security Administration, Comparative Studies Staff, Office of International Policy; prepared under grant no. 98083, Department of Health and Human Services, Social Security Administration.