Modern methods for measuring the intesity of gravity,
by Clarence H. Swick.

APA Citation

U.S. Coast and Geodetic Survey., Swick, C. H. (Clarence Herbert). (1921). Modern methods for measuring the intesity of gravity. Washinton: Govt. Print. Off..

MLA Citation

U.S. Coast and Geodetic Survey, and Clarence H. (Clarence Herbert) Swick. Modern Methods for Measuring the Intesity of Gravity. Washinton: Govt. Print. Off., 1921.

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