April G. Breakthroughs in Industrial Enterprises. In Russian /Apresyan G. Proryvy v promyshlennykh predpriyatiyakh. Rostov-On-Don. North Caucasus Book Publishing House. 1931. 96 p. 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. SKUalb3db52e416dc880dd.