 | Avery, Thomas Eugene. 1n | (2) |
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 | Avery, Thomas Eugene. 1n; Forester's guide to aerial photo interpretation / T. Eugene Avery. Washington, D.C. : U.S. Dept. of Agriculture, Forest Service, 1969. | |
| Avery, Thomas Eugene. 1n; Forester's guide to aerial photo interpretation / T. Eugene Avery. Washington, D.C. : U.S. Dept. of Agriculture, Forest Service, 1966. | |
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