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Frank, Ludwig, b. 1865
Essentials of mechanical drafting; elements, principles, and methods, with specific applications in working drawings of furniture, machine, and sheet metal construction; a manual for students, arranged for reference and study in connection with courses in manual training, industrial, high, and technical schools
Springfield, Mass. : Milton Bradley Company, 1917
تيèمà âçےٍà ٌ ٌàéٍà http://www.archive.org
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