@article{Arefjev2019the, author={Arefjev, Y.F. and Nguen Thi, L.H.}, title={THE PRINCIPLE OF ECOSYSTEM PROTECTION OF FOREST AND FIELD PLANTINGS FROM PARASITIC ORGANISMS}, journal={Forestry Engineering Journal}, publisher={FSBE Institution of Higher Education Voronezh State University of Forestry and Technologies named after G.F. Morozov}, year={2019}, pages={17-23}, volume={9}, issue={1}, }