1. Validation of the OpCost logging cost model using contractor surveys. Issue 2 (4th May 2017) Authors: Bell, Conor K.; Keefe, Robert F.; Fried, Jeremy S. Journal: International journal of forest engineering Issue: Volume 28:Issue 2(2017) Page Start: 73 Record Type: Journal Article View Content: Available online (eLD content is only available in our Reading Rooms) ↗