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Ferrocarriles – Perú – Ancash – Siglo XX (10)
Minería – Perú – Ancash – Siglo XX (5)
Santa, Río, Cuenca (Perú) (5)
Velásquez Jiménez, Juan (5)
Carbón – Explotación – Perú – Siglo XX (4)
Caminos – Perú – Ancash – Siglo XX (3)
Ferrocarriles – Perú – La Libertad – Siglo XX (3)
Perú – Pallasca (Ancash: Provincia) – Siglo XX (3)
Perú. Ministerio de Fomento. Cuerpo de Ingenieros de Minas (3)
Cabana, Río, (Perú) (2)
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