Treesearch
A comparison of four survey techniques used in outdoor recreation research
| Authors: | Elwood L., Jr. Shafer, John F., Jr. Hamilton |
| Year: | 1967 |
| Type: | Research Paper |
| Station: | Northern Research Station |
| Source: | Res. Pap. NE-86. Upper Darby, PA: U. S. Department of Agriculture, Forest Service, Northeastern Forest Experiment Station. 22 p. |
Download (PDF 1.20 MB): https://research.fs.usda.gov/download/treesearch/3903.pdf