๐”– Bobbio Scriptorium
โœฆ   LIBER   โœฆ

Report on Mr. McRea's Railroad Drawbridge and Switch Safety Telegraph


Book ID
113151645
Publisher
Elsevier Science
Year
1854
Tongue
English
Weight
134 KB
Volume
57
Category
Article
ISSN
0016-0032

No coin nor oath required. For personal study only.


๐Ÿ“œ SIMILAR VOLUMES


Report of the Committee on Science and t
โœ O.B. Colton; Thos. Shaw; Wm.D. Marks; Coleman Sellers Jr. ๐Ÿ“‚ Article ๐Ÿ“… 1879 ๐Ÿ› Elsevier Science ๐ŸŒ English โš– 545 KB

## HALI, OF THE FRAKKLIX ISSTWCTE, \ PHILADELPHIA, NOY. 29th, 1X7X. ) The Committee on Science and the Arts, constituted by the Franklin Institute. of the State of Pennsylvania, to whom WJH referred for examination A&worth's Automatic Safety-switch for Railroads, report that they have carefully ex