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Ervin Kenison

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Descriptive Geometry: -1917
Compendium Of Drawing ... Working Drawings, By C. L. Griffin. Mechanism [by] W. H. James. Machine Design, By C. L. Griffin. Sheet Metal Pattern Drafting, Tin-smithing, By W. Neubecker
Compendium of Drawing ... Working Drawings, by C. L. Griffin. Mechanism [by] W. H. James. MacHine Design, by C. L. Griffin. Sheet Metal Pattern Draft