For citations:

Komissarov B.N. Russian Investigators in Brazil in 1910–1930-s and International Cultural-Ecological Project “Langsdorff – XXI Century”. Izvestiya Rossiiskoi Akademii Nauk. Seriya Geograficheskaya. 2012;(1):106-116. (In Russ.) https://doi.org/10.15356/0373-2444-2012-1-106-116