• publisher: Washington, : Govt. Print. Off
  • creator: U.S. Coast and Geodetic Survey U.S. Coast and Geodetic Survey. Magnetic Observatory, Crab Island, Porto Rico
  • contributor: U.S. Coast and Geodetic Survey. Magnetic Observatory, Crab Island, Porto Rico.
  • Keyword: Geomagnetism Observations
  • pages: v. :
  • language: eng
  • lccn: u
  • notes: At head of title, 1903-1904-- :Department of Commerce and Labor. Coast and Geodetic Survey. O. H. Tittman, superintendent.
  • download: pdf file