India. Office of the Chief Adviser, Factories, & India. Ministry of Labour and Employment. (1961). Pneumoconiosis in the coal mines in Jharia and Ranigunj coal fields.
Citace podle Chicago (17th ed.)India. Office of the Chief Adviser, Factories, a India. Ministry of Labour and Employment. Pneumoconiosis in the Coal Mines in Jharia and Ranigunj Coal Fields. [New Delhi], 1961.
Citace podle MLA (8th ed.)India. Office of the Chief Adviser, Factories, a India. Ministry of Labour and Employment. Pneumoconiosis in the Coal Mines in Jharia and Ranigunj Coal Fields. 1961.
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