Geophysical surveying
Subtitle: Magnetic observations with a vertical force instrument. (A paper read before the Northumberland and Durham Branch of the Institute of Mine Surveyors, February, 1935.
Contributors: Institute of Mine Surveyors.
Published: 1935
Place of publication: Musselburgh
Language: eng
Number of pages: 16
Notes: From Transactions of the Institute of Mine Surveyors, 15.