Elementary and practical treatise on subterraneous surveying, and the magnetic variation of the needle.
By: By Thomas Fenwick...Also, The method of conducting subterraneous surveys without the use of the magnetic needle...by Thomas Baker.
Edition: 3rd ed.
Publisher: John Weale
Published: 1861
Place of publication: London
Language: eng
Number of pages: 162
Subjects: Mine surveying.