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Dressel, W.M. (Nombre personal)
Machine generated authority record.
Work cat.: (OSt): Dressel, W.M., Inverted pyramid-shaped plugs for closing abandoned mine shafts Galen, K.S., demonstration project, 198
Machine generated authority record.
Work cat.: (OSt): Dressel, W.M., Inverted pyramid-shaped plugs for closing abandoned mine shafts Galen, K.S., demonstration project, 198