Technical Encyclopedia. In Russian /Tekhnicheskaya entsiklopediya. Dictionary of all branches of technology and related sciences. Volume Six. Circular Process-Oil. St. Petersburg. Enlightenment 1896. 788 s. We have thousands of titles and often several copies of each title may be available. Please feel free to contact us for a detailed description of the copies available. SKUalb31daea2ff3274fc0.