de Man, H. 594/I.2/01337: How Belgian workers educate themselves. in: Locomotive Engineers Journal (Des Moines, Iowa), March 1923, 3, pp. 195-197.
Lua i Stíl Chicago (17ú heag.)de Man, Hendrik. 594/I.2/01337: How Belgian Workers Educate Themselves. in: Locomotive Engineers Journal (Des Moines, Iowa), March 1923, 3, Pp. 195-197.
Lua MLA (8ú heag.)de Man, Hendrik. 594/I.2/01337: How Belgian Workers Educate Themselves. in: Locomotive Engineers Journal (Des Moines, Iowa), March 1923, 3, Pp. 195-197.
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