An evaluation of the 1965.O epoch, H.O. 1706 World magnetic variation chart
By: [by Donald W. Hill]
Contributors: United States. Naval Oceanographic Office.
Series: [United States. Naval Oceanographic Office] Technical report; TR-207; Technical report (United States. Naval Oceanographic Office) ;; TR-207.
Publisher: Naval Oceanographic Office
Published: 1968
Place of publication: Washington
Language: eng
Number of pages: 302
Subjects: Geomagnetism -- Tables
Notes: Cover title.