Cave survey (English Wikipedia)

Analysis of information sources in references of the Wikipedia article "Cave survey" in English language version.

refsWebsite

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1derekbristol.com

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1canadianminingjournal.com

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archive.org

marco corvi (2021-03-02). Disto XSap Bric 20200302.

bcra.org.uk

"BCRA Surveying Grades". British Cave Research Association. Retrieved 2009-05-02.

canadianminingjournal.com

Inco's Innovations^{[permanent dead link]}, Canadian Mining Journal, April 2000, accessed 2010-12-02. "HORTA unit for determining the geographic position underground. HORTA-Honeywell Ore Retrieval and Tunneling Aid-is a box containing a gyro and an accelerometer, originally developed for the U.S. military, that solves the problem of positioning and location underground."

cavewhere.com

Schuchardt, Philip (2013). "Quick 3D Cave maps using Cavewhere" (PDF). 16th International Congress of Speleology.

chaos.org.uk

Degtjarev, Alexander; Snetkov, Eugene; Gurjanov, Alexey (July 2007). "Obtaining accurate cave depths by hydrolevelling" (PDF). Compass Points (38). BCRA Cave Survey Group: 8–12. ISSN 1361-8962. Retrieved 2009-05-02.

derekbristol.com

"Overview". Derek Bristol. Retrieved 2025-02-13.

worldcat.org

search.worldcat.org

Degtjarev, Alexander; Snetkov, Eugene; Gurjanov, Alexey (July 2007). "Obtaining accurate cave depths by hydrolevelling" (PDF). Compass Points (38). BCRA Cave Survey Group: 8–12. ISSN 1361-8962. Retrieved 2009-05-02.