File:Machine drawing; a practical guide to the standard methods of graphical representation of machines, including complete detail drawings of a duplex pump and of a direct-current generator (1914) (14591092077).jpg - Wikimedia Commons
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File:Machine drawing; a practical guide to the standard methods of graphical representation of machines, including complete detail drawings of a duplex pump and of a direct-current generator (1914) (14590826590).jpg - Wikimedia Commons
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The Mechanical Engineering Drawing Desk Reference: Creating and Understanding ISO Standard Technical Drawings: Green, Mr Paul: 9781448613090: Amazon.com: Books
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