Caoutchouc
French-English Dictionary of Military Terms · 1918 · p. 3
Caoutchouc, rubber. Bicycle tire-—Caoutchouc vulcan isé (caoutchouc sulfuré). Vulcanized rubber. Vulcanite.—Caoutchouc d’étanchéité. Insulating rubber. [p.90]
Readham'da tam maddeyi gor →