United States. Federal Supply Service. (1928). General schedule of supplies for fiscal year 1929, 1st supplement of awards to class 1: Carbon paper, hand sealers, and typewriter ribbons; class 9: Clocks for school use; class 12 : Current meters for measuring velocity of flowing waters and accessories and parts therefor, for period from Aug. 14, 1928 to June 30, 1929. [publisher not identified].
Chicago Style (17th ed.) CitationUnited States. Federal Supply Service. General Schedule of Supplies for Fiscal Year 1929, 1st Supplement of Awards to Class 1: Carbon Paper, Hand Sealers, and Typewriter Ribbons; Class 9: Clocks for School Use; Class 12 : Current Meters for Measuring Velocity of Flowing Waters and Accessories and Parts Therefor, for Period from Aug. 14, 1928 to June 30, 1929. [Washington]: [publisher not identified], 1928.
MLA (9th ed.) CitationUnited States. Federal Supply Service. General Schedule of Supplies for Fiscal Year 1929, 1st Supplement of Awards to Class 1: Carbon Paper, Hand Sealers, and Typewriter Ribbons; Class 9: Clocks for School Use; Class 12 : Current Meters for Measuring Velocity of Flowing Waters and Accessories and Parts Therefor, for Period from Aug. 14, 1928 to June 30, 1929. [publisher not identified], 1928.