Practical geomagnetic exploration with the Hotchkiss superdip
By: by Noel H. Stearn ...
Series: American institute of mining and metallurgical engineers. Technical publication -- no. 370.  Class L, Geophysical prospecting, no. 24
Publisher: American institute of mining and metallurgical engineers
Published: 1930
Place of publication: New York
Language: eng
Number of pages: 31
Subjects: Magnetometer; Prospecting