. Economic implications for management of structural retention on harvest units at the Blue River Ranger District, Willamette National Forest, Oregon . JL JL JL JL X X JL Figure 5—Acres of timberland offered for bid, 1980-90, for sales with more than 2 million board feet, Blue River Ranger District, Willamette National Forest. 1980 1981 1982 1983 1984 1985 Year 1986 1987 1988 1989 1990 13

---

Size: 2861px × 1747px
Photo credit: © The Bookworm Collection / Alamy / Afripics
License: Licensed
Model Released: No

Keywords: ., bookcentury1900, booksubjectfores, booksubjectforestsandforestry