Scientific American Supplement, No. 520, December 19, 1885| author | Various |
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| download | pg13401.pdb (1055K) |
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| language | English |
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| categories | Science -- Periodicals T: Technology (General) |
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| copyright status | Public domain in the USA. |
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| source | Project Gutenberg EBook #13401 2004-09-08 |
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