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Instituto Geológico y Minero de España |
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| Entrada principal: | HAYES C. Willard |
| Título: | Physiography and geology of region adjacent to the Nicaragua canal Route |
| Autor: | Hayes, C. Willard |
| Notas: | En : Bulletin of the Geological Society of America, vol. 10, n 5 ; May 1899 ; p. 285 - 348| |
| Localización: | IGME - Biblioteca |