For citations:

Gerasimova M.I., Khitrov N.B., Lebedeva I.I. Development of the basic soil classification of Vladimir Fridland in the classification of soils of Russia 2004/2008. Dokuchaev Soil Bulletin. 2020;(102):5-20. (In Russ.) https://doi.org/10.19047/0136-1694-2020-102-5-20