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Hours of work in coal mines : [Questionnaire]
Author
Title
Hours of work in coal mines : [Questionnaire].
Published
Geneva : International labour office, 1930.
Physical Description
91 pages, 1 unnumbered page ; 22 cm.
Notes
At head of title: International labour conference. Fifteenth session. Geneva, 1931.
Format
Books
Language
English
Added to Catalog
March 28, 1995
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