Não informado. (1949). Industrial health review. Department of National Health and Welfare.
Παραπομπή σε μορφή Chicago (17η εκδ.)Não informado. Industrial Health Review. Ottawa: Department of National Health and Welfare, 1949.
Παραπομπή σε μορφή MLA (8th εκδ.)Não informado. Industrial Health Review. Department of National Health and Welfare, 1949.
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