Drafting machine (English Wikipedia)

Analysis of information sources in references of the Wikipedia article "Drafting machine" in English language version.

refsWebsite

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1books.google.com

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archive.org

Hearst Magazines (December 1993). "Popular Mechanics". Popular Mechanics. Hearst Magazines: 76–. ISSN 0032-4558. Retrieved 7 July 2011.

books.google.com

Farago, Francis T.; Curtis, Mark A. (1994). Handbook of Dimensional Measurement. Industrial Press Inc. pp. 253–255. ISBN 0-8311-3053-9.

worldcat.org

search.worldcat.org

Hearst Magazines (December 1993). "Popular Mechanics". Popular Mechanics. Hearst Magazines: 76–. ISSN 0032-4558. Retrieved 7 July 2011.