Hours of work in coal mines. Item II on the agenda.

By: Contributor(s): Material type: TextTextPublication details: Geneva, International labour office, 1930.Description: 91, [1] p. 21 cmSubject(s): DDC classification:
  • 331.8182233
LOC classification:
  • HD5119.M6 I5 1930b
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At head of title: Questionnaire. International labour conference. Fifteenth session. Geneva--May, 1931.

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