Zenkov D.A. Manual of Mining Geology Methodology for Gold Deposits. Part 1. In Russian/Zenkov D.A. Rukovodstvo po metodike rudnichnoy geologii dlya zolotorudnykh mestorozhdeniy. Chast 1. Mining Exploration Sampling at Gold Mines. M. Gosgeolizdat. 1941. 212s. Please contact us for details on condition of available copies of the book. SKUalb733b5da5b3ea64c1