For citations:

Usmanov R.Z., Osipova S.V. Organic mass keeping in agrocenosis in Terek-and-Kuma lowland soils in natural and anthropogenic factors. South of Russia: ecology, development. 2009;4(3):119-123. (In Russ.) https://doi.org/10.18470/1992-1098-2009-3-119-123