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The duodecimal system : a speculative essay
Historical Society of Pennsylvania - Closed Stacks Wn*.894
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- Format:
- Book
- Author/Creator:
- Leffmann, Henry.
- Series:
- Bulletin / Wagner Free Institute of Science of Philadelphia.
- Bulletin / Wagner Free Institute of Science of Philadelphia
- Language:
- English
- Physical Description:
- p. 3-6 ; cm. (8vo)
- Place of Publication:
- 1928.
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