« Antiquarian Books » [archive du ] (consulté le ), R.K. Maak, Atlas to « Travel on the Amur river made by order of the Siberian department of the Emperor’s Russian Geographical Society in 1855 », Saint-Pétersboug, S.F. Soloviev, 1859.
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« Antiquarian Books » [archive du ] (consulté le ), R.K. Maak, Atlas to « Travel on the Amur river made by order of the Siberian department of the Emperor’s Russian Geographical Society in 1855 », Saint-Pétersboug, S.F. Soloviev, 1859.