Welding patent classification in the A. F. Davis Welding Library

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100 1 ‡aGreen, Robert Smith, ‡d1914-
245 1 0 ‡aWelding patent classification in the A. F. Davis Welding Library.
260 ‡aColumbus, ‡bCollege of Engineering, the Ohio State University, ‡c1950.
300 ‡aiii, 74 p. ‡billus. ‡c23 cm.
490 0 ‡aOhio State University studies: Engineering series, v. 19, no. 1.
490 0 ‡aOhio. State University, Columbus. Engineering Experiment Station. Bulletin, ‡vno. 140.
538 ‡aMode of access: Internet.
650 0 ‡aPatents ‡vClassification.
650 0 ‡aWelding ‡xPatents.
710 1 ‡aOhio State University. ‡bA.F. Davis Welding Library.
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