U.S. Dept. of Labor, Bureau of Labor Statistics , For sale by the Supt. of Docs., U.S. Govt. Print. Off
Bulletin / Bureau of Labor Statistics
no. 1530-85, 1685-67, 1725-79, 1775-71, 3000-18, 3010-14, 3015-20, 3020-20, 3030-16, 3035-20, 3040-16, 3045-15, 3050-13, 3055-17
Jun. 1967 , Apr. 1971 , Apr. 1972 , Apr. 1973 , Apr. 1980 , May 1981 , May 1982 , May 1983 , May 1985 , May 1986 , Apr. 1987 , Apr. 1988 , Apr. 1989 , Apr. 1990
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