Tables for computing excavation and embankment on railroads and canals; [electronic resource] for chains of one hundred feet and slope of three to two ...
Imprint
Providence, Knowles, Anthony & co., printers, 1851.
Electronic text and image data. Ann Arbor, Mich. : University of Michigan, Digital Library Initiatives, 2000. Includes both TIFF files and keyword searchable text. [Making of America] This volume is made possible by a grant from the Andrew W. Mellon Foundation as part of Making of America IV: the American voice, 1850-1877.
