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Start Over You searched for: Publish Year Decade 1930 - 1939 Remove constraint Publish Year Decade: 1930 - 1939 Sudoc Stem C 25.6/2 Remove constraint Sudoc Stem: C 25.6/2

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3. Steamboats. Rules 1 and 2 adopted pursuant to authority conferred by act of June 13, 1933, amending rules 1 and 2, pertaining to design, construction, and inspection of boilers, unfired pressure vessels, and appurtenances thereof: 51st supplement to General rules and regulations [edition of 1931].