1 "Ficheiro:Vanadium_rails_(IA_vanadiumrails00amerrich).pdf".

Ficheiro:Vanadium rails (IA vanadiumrails00amerrich).pdf

used for sound recordings.PD-1923Public domain in the United States//commons.wikimedia.org/wiki/File:Vanadium_rails_(IA_vanadiumrails00amerrich).pdf...