Vandermaelen P, Ode H, Hassel SGH.Mongolia & Russia 1827. Bru xelles: Ph. Vandermaelen; 1827. Hand col. lithographed map. Relief shown by hachures. Covers area between Lake Baikal and Hulun Nur in Russia, Mongolia and Inner.
Vandermaelen P, Ode H, Hassel SGH.Mongolia & Russia 1827. Bru xelles: Ph. Vandermaelen; 1827. Hand col. lithographed map. Relief shown by hachures. Covers Lake Baikal and vicinity in Russia and Mongolia. Prime meridian: Paris.