Note on a new instrument for surveying deep bore holes
By: by J.B. Porter.
Contributors: Canadian Society of Civil Engineers.
Series: CIHM/ICMH Microfiche series = CIHM/ICMH collection de microfiches -- no. 99730
Publisher: s.n.
Published: 1991
Place of publication: [Montréal?
Language: eng
Format: Microform
Subjects: Mine surveying.; Surveying -- Instruments.
Notes: Caption title.

At head of title: Please read and send in as full a discussion as possible at earliest date. The Canadian Society of Civil Engineers. Incorporated 1887. Advance proof-(Subject to revision) ...

"(Read before the Mining Section, 30th November, 1905.)"

Filmed from a copy of the original publication held by the National Archives of Canada. Ottawa : Canadian Institute for Historical Microreproductions, 1991.