1. A study of the dust and related factors in the zinc and lead mining industry of Oklahoma Author(s): Warkentin, E. C. (Euald Carl), 1908-1985, authorAdy, R. B., author Publication: [Oklahoma City?] : Division of Industrial Hygiene, Bureau of Public Health Engineering, [1941?] Subject(s): Occupational ExposureDustMiningZinc -- adverse effectsLead -- adverse effectsOklahoma
2. Boj se parhu: dihaj skozi nos, ne skozi usta! Publication: [Slovenia] : Ministrstvo za ljudsko zdravstvo, [194-?] Subject(s): DustRespirationMouth Breathing