Niderlandy, Belʺgii︠a︡, Germanii︠a︡, Avstrii︠a︡ : uchebnai︠a︡ karta /
Soviet Union.Glavnoe upravlenie geodezii i kartografii.
Folimonova, T. P.
Moskva : GUGK,
1951.
Relief shown by shading, gradient tints, contours and spot heights. Depths shown by gradient tints and soundings.
Shows mineral resources.