Cultured longstanding hayfields and pasture being made on theplough-lands production increase and stabilization - PDF (Russian)
Copyright (c) 2008 Temirsultanov E.E., Vasilieva I.V., Ryasanova N.E., Khomenko N.D., Pryahin V.N.
![Creative Commons License](http://licensebuttons.net/l/by-nc/4.0/88x31.png)
This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License.