Distance line (English Wikipedia)

Analysis of information sources in references of the Wikipedia article "Distance line" in English language version.

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gue.com

Devos, Fred; Le Maillot, Chris; Riordan, Daniel (2004). "Introduction to Guideline Procedures - Part 2: Methods" (PDF). DIRquest. 5 (4). Global Underwater Explorers. Retrieved 2009-04-05.
Devos, Fred; Le Maillot, Chris; Riordan, Daniel (2005). "Introduction to Guideline Procedures – Part 3: Navigation" (PDF). DIRquest. 6 (1). Global Underwater Explorers. Archived from the original (PDF) on 2011-06-11. Retrieved 2009-04-05.
Devos, Fred; Le Maillot, Chris; Riordan, Daniel (2004). "Introduction to Guideline Procedures Part 1: Equipment" (PDF). DIRquest. 5 (3). Global Underwater Explorers. Retrieved 2009-04-05.

"Gold Line Fund". National Speleological Society Cave Diving Section. Retrieved 28 September 2024.

Davis, Andy (7 August 2019). "Advanced Wreck Diving Techniques". scubatechphilippines.com. Retrieved 16 October 2021.

Devos, Fred; Le Maillot, Chris; Riordan, Daniel (2005). "Introduction to Guideline Procedures – Part 3: Navigation" (PDF). DIRquest. 6 (1). Global Underwater Explorers. Archived from the original (PDF) on 2011-06-11. Retrieved 2009-04-05.