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- catalog contributor b4464150.
- catalog created "1913.".
- catalog date "1913".
- catalog date "1913.".
- catalog dateCopyrighted "1913.".
- catalog extent "28 p.".
- catalog issued "1913".
- catalog issued "1913.".
- catalog language "eng".
- catalog publisher "Lynchburg, Va., J. P. Bell, printers,".
- catalog subject "Mental fatigue.".
- catalog title "A study of mental fatigue in relation to the daily school program [by] W. H. Heck.".
- catalog type "text".