In Russian. Khechumov, Revol Artemievich. General equations of mechanics in curvilinear orthogonal coordinate system. Moscow: 1973. Obshchie uravneniya mekhaniki v krivolineynoy ortogonalnoy sisteme koordinat. In Russian/General equations of mechanics in a curvilinear orthogonal coordinate system. All images are for identification of editions only. Several books of the same edition may be available. Please feel free to request photos of available books. SKU7053686