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Title: model, scale 1:12, of Nelsons improved "Challenge" ore feede [Go to resource]
Description: model, scale 1:12, of Nelsons improved "Challenge" ore feeder for stamp battery License: http://creativecommons.org/licenses/by-nc-sa/2.5/ Subjects: models Source: Science Museum Identifier: 1919-217 Go to resource More Like this...
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