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4. E. A. Dmitriev, Mathematical Statistics in Soil Science (Mosk. Gos. Univ., Moscow, 1995) [in Russian].
5. V. A. Zryanin, “Effect of Ants of the Genus Lasius on the Soils of Meadow Biogeocenoses,” Zool. Zh. 123(3), 278–288 (2003).