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- catalog abstract "Includes comparative statistics for years from 1935.".
- catalog contributor b5629108.
- catalog date "1946".
- catalog description "Includes comparative statistics for years from 1935.".
- catalog description "No more published.".
- catalog extent "v.".
- catalog isReplacedBy "Indexes of output per man-hour for selected industries".
- catalog issued "1946".
- catalog language "eng".
- catalog publisher "[Washington, D.C.]".
- catalog relation "Indexes of output per man-hour for selected industries".
- catalog spatial "United States.".
- catalog subject "Coal mines and mining United States.".
- catalog subject "Labor productivity.".
- catalog title "Productivity and unit labor cost in the bituminous coal mining industry.".
- catalog type "text".