Tác giả
India. Labour Bureau
3
Coal Mines Provident Fund
2
Hudson, Harriet D. (Harriet Dufresne), 1912-
2
India. Coal Mines Labour Welfare Organisation
2
Banerjee, Sukumar, 1922-
1
Coal Mines Family Pension Fund
1
Coal Mines Labour Welfare Fund
1
Cole, Margaret, 1893-1980
1
Douglass, David John
1
Goodrich, Carter, 1897-1971
1
Gottlieb, Amy Zahl
1
Guha, B. P.
1
Hair, P. E. H. (Paul Edward Hedley)
1
Hunt, Edward Eyre, 1885-
1
India. Dept. of Mines
1
India. Directorate-General of Mines Safety
1
India. Ministry of Labour
1
India. Ministry of Labour and Employment
1
India. Office of the Chief Labour Commissioner
1
India. Study Group for Coal
1
Japan. Sōrifu. Tōkeikyoku
1
May, W. J.
1
Neville, Robert G.
1
Nicholson, James
1
Saliers, Earl Adolphus, 1884-
1
Somers, Gerald George
1
Srivastava, V. L.
1
Tryon, F. G. (Frederick Gale), 1892-1940
1
United States. Coal Strike Commission, 1902-1903. Board of Conciliation
1
University of Leeds
1
University of London
1
University of Oxford
1
Wesleyan Methodist Church
1
Wesleyan Methodist Church. Temperance and Social Welfare Dept
1
Willits, Joseph Henry, 1889-
1