Bilby steel tower for triangulation,
by Jasper S. Bilby.

APA Citation

Bilby, J. S. (Jasper Sherman). (1940). Bilby steel tower for triangulation. Washington: U.S. Govt. Print. Off..

MLA Citation

Bilby, Jasper S. (Jasper Sherman), 1864-. Bilby Steel Tower for Triangulation. Washington: U.S. Govt. Print. Off., 1940.

Warning: These citations may not always be complete (especially for serials).