Treesearch
The photo-choice method for recreation research
| Authors: | Elwood L., Jr. Shafer |
| Year: | 1964 |
| Type: | Research Paper |
| Station: | Northern Research Station |
| Source: | Res. Pap. NE-29. Upper Darby, PA: U. S. Department of Agriculture, Forest Service, Northeastern Forest Experiment Station. 10 p. |
Download (PDF 1.55 MB): https://research.fs.usda.gov/download/treesearch/3846.pdf