United States magnetic declination tables and isogonic charts for 1902 and principal facts relating to the earths magnetism

Louis A. Bauer
Bok · Engelsk · 1902

Utgitt	Washington, D.C. , 1902
Omfang	405 s., [2] fold. pl. : ill.
Opplysninger	Over tittelen: Treasury Department. U.S. Coast and Geodetic Survey