Strange, W. E. (1982). Scribing, graduation and calibration of US coast and geodetic survey leveling rods from 1877 to 1968.
Chicago-Zitierstil (17. Ausg.)Strange, William E. Scribing, Graduation and Calibration of US Coast and Geodetic Survey Leveling Rods from 1877 to 1968. Rockville, Md, 1982.
MLA-Zitierstil (9. Ausg.)Strange, William E. Scribing, Graduation and Calibration of US Coast and Geodetic Survey Leveling Rods from 1877 to 1968. 1982.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.