All-Union S.-Kh.and artisanal exhibition (1; 1923; Moscow).Assistance at the exhibition.Prince.1.

All-Union S.-Kh.and artisanal exhibition (1; 1923; Moscow).Assistance at the exhibition.Prince.1. / Modestov A.P.(sost. Under the general ed.).- Moscow: [b.I.], 1923. -605: Territory, people..Source of an electronic copy: Russian Geographical Society