Schnorchel (Czech Wikipedia)

Analysis of information sources in references of the Wikipedia article "Schnorchel" in Czech language version.

refsWebsite

Global rank Czech rank

800^th place

4,207^th place

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.