Technical Encyclopedia, Volume 4: Perfume-Test of Strength. In Russian (ask us if in doubt)/Tekhnicheskaya entsiklopediya, Tom 4: Dukhi-Ispytanie prochnosti. Dictionary of all branches of technology and related sciences. About 7,000 pages, 50,000 articles and terms, and over 12,000 illustrations and design drawings. St. Petersburg Enlightenment 1912. SKUalbcf45a41912bccd8d.