Submarine snorkel (English Wikipedia)

Analysis of information sources in references of the Wikipedia article "Submarine snorkel" in English language version.

refsWebsite

Global rank English rank

6^th place

6^th place

800^th place

676^th place

archive.org

Keegan, John (1989). The Price of Admiralty. New York: Viking. p. 280. ISBN 0-670-81416-4.
Lamb, James B. (1987). On the triangle run. Toronto: Totem Books. pp. 25, 26. ISBN 0-00-217909-1.

espacenet.com

worldwide.espacenet.com

"GB 106330 (A) - Improvements in or relating to Submarine or Submersible Boats". Scott's Shipbuilding & Engineering Co., and Richardson, James. May 19, 1916.