For citations:
Safronov V.A., Razdorskiy A.S., Skalenko S.Yu., Lopatin A.A., Kovtunov A.I., Piskunova N.V., Kologorov A.I., Kouklev E.V., Toporkov V.P. Geographical Information System for Epidemiological Surveillance of Natural Focal Infectious Diseases in Combined Foci in the Territory of the Astrakhan Region. Problems of Particularly Dangerous Infections. 2010;(3(105)):35-38. (In Russ.) https://doi.org/10.21055/0370-1069-2010-3(105)-35-38
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