A.N. Krylov Lectures on approximate calculations. In Russian /Krylov A.N. Lektsii o priblizhennykh vychisleniyakh. M.L. GITTLE 1950. 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. SKUalbe52a9fd40409c6a6.