Reference materials on the system of machines in forestry contain the main technical data of modern and promising types and brands of tractors and forestry machines , as well as reference materials, necessary for the selection and calculation of the optimal composition , technical and economic performance of machine units , the necessary number of them to perform specific forestry work and on their basis the development of technological complexes of machines and composition of the ICC for enterprises of the forest complex . Designed for full-time and part-time students in the specialty 250100 "Forestry", as well as managers and specialists of enterprises and organizations of the forest complex .