... Quarterly Journal of Forestry, 72: 207–210.LIU S., CORCORAN T.J., 1993. Road and landing spacing under the consideration of surface dimension of road and landings. International Journal of Forest ... researchers.Logging method, price of products, taxation policies, landing costs, overhead costs, equipment opportunity costs, width of road and the size of landing, skidding pattern, profit of logging contrac-tor, ... S21Department of Forest and Soil Sciences, Institute of Forest Engineering, University of Natural Resources and Applied Life Sciences, Vienna, Austria2Department of Forest Engineering, College of Forestry,...