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Instituto Geológico y Minero de España |
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| Entrada principal: | GREEN T.E. |
| Título: | The underground electric trolley locomotive installation at Sanhole Colliery |
| Autor: | Green, Thomas E. |
| Notas: | En : Transactions of the Institution of Mining Engineers, Vol. 14, part 2, november 1954 ; p. 115 - 142| |
| Localización: | IGME - Biblioteca |