For citations:

Frolov I.V. Information on the Delivery of Open Sheets as a Source for Studying the History of Archaeological Re-Search on the Territory of the Khanty-Mansi Autonomous Okrug — Yugra in Modern Times. Surgut State Pedagogical University Bulletin. 2023;(3 (84)):47-52. (In Russ.) https://doi.org/10.26105/SSPU.2023.3.84.013