Biblioteca - Ingemmet

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Ackermann, A.S.E.

Coal-cutting by machinery in America - London The Colliery Guardian Company, Ltd. 1902 - 134 p. láms. - Colliery Guardian Series of Handbooks n.16 .

Subjects--Topical Terms:
ARRANQUE
CARBON
MINERIA DEL CARBON

Universal Decimal Class. No.: A/622.33/A17