U.S. coast and geodetic survey: Terrestrial Magnetism. Horizontal Intensity Variometers. By George Hartnell (Special Publication No. 89). Sixty-two pages, illustrations, plate, 8vo. Washington, Government Printing Office, 1922. Price, 10 cents

• Publisher: Elsevier Science
• Year: 1923
• Tongue: English
• Weight: 119 KB
• Volume: 196
• Category: Article
• ISSN: 0016-0032
• DOI: 10.1016/s0016-0032(23)90437-0