Krylov A.N., Bogolyubov N.N. The main problems of non-linear mechanics. In Russian /Krylov A.N., Bogolyubov N.N. Osnovnye problemy nelineynoy mekhaniki. M., L. GTTI 1932. 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. SKUalb856fec56043bebfb.