A proposal is herewith submitted to you for regulating, from this Observatory, the clocks of the Pennsylvania Central, and other railroads associated with it
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Publication
1869 - Allegheny Observatory, Pittsburgh, Pennsylvania
Language
English
Word Count
0 words, Guess
Page Count
0 pages
Identifiers
- Open LibraryOL58482141M
- OCLC Control Number26792265
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