International Labour Organisation programme of Idustrial Activities. (1975). The wlfare of workers in mines other than coal mines: Third tripartite technical meeting for mines other than coal mines. Geneva: Iternational Labour office.
Παραπομπή Chicago StyleInternational Labour Organisation programme of Idustrial Activities. The Wlfare of Workers in Mines Other Than Coal Mines: Third Tripartite Technical Meeting for Mines Other Than Coal Mines. Geneva: Iternational Labour office, 1975.
Παραπομπή MLAInternational Labour Organisation programme of Idustrial Activities. The Wlfare of Workers in Mines Other Than Coal Mines: Third Tripartite Technical Meeting for Mines Other Than Coal Mines. Geneva: Iternational Labour office, 1975.
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