Health factors involved in working under conditions of heat stress : report of a WHO scientific group.
- Geneva : World health organization, c 1969.
- 32 p. ; 24 cm.
- World health organization technical report series, No. 412. .
314 314
Labor unions--labor-management.
331.82 / W893h
314 314
Labor unions--labor-management.
331.82 / W893h