Magnetic surveys
Subtitle: purposes, methods and instruments.
Contributors: U.S. Coast and Geodetic Survey.
Edition: [Rev. (1935) ed.]
Series: Serial; no. 272
Publisher: U.S. Govt. Print. Off.
Published: 1935
Place of publication: Washington
Language: eng
Number of pages: 15
Subjects: Geomagnetism.
Notes: At head of title: U.S. Department of Commerce. Daniel C. Roper, secretary. Coast and Geodetic Survey. R.S. Patton, director...