U.S. Dept. of Labor, Bureau of Labor Statistics , For sale by the Supt. of Docs., U.S. Govt. Print. Off.
1968
Bulletin / Bureau of Labor Statistics
no. 1575-41, 1660-29, 1685-43, 1725-34, 1775-18, 3000-52, 3010-61, 3015-56, 3020-57, 3025-64, 3030-55, 3035-62, 3045-52, 3055-48
Dec. 1967 , Oct. 1969 , Oct. 1970 , Oct. 1971 , Oct. 1972 , Oct. 1980 , Oct. 1981 , Oct. 1982 , Oct. 1983 , Oct. 1984 , Oct. 1985 , Oct. 1986 , Oct. 1988 , Oct. 1990
Available at 4 libraries