Axonometrical projections on the most important geometrical surfaces. [electronic resource] Drawings in descriptive geometry. Serving at the same time as a catalogue of models executed according to the aforesaid projections by Ferdinand Engel. With IX plates.
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.
