 | Timber Grading. | (3) |
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 | Sawlog grades for eastern white pine / by Myron D. Ostrander and Robert L. Brisbin. Ostrander, Myron D. Upper Darby, Pa. : Northeastern Forest Experiment Station, Forest Service, U.S. Dept. of Agriculture, 1971. | |
| An improved system for estimating the value of western white pine / Thomas A. Snellgrove, Marlin E. Plank, Paul H. Lane. Snellgrove, Thomas A. cn Portland, Or. : Pacific Northwest Forest and Range Experiment Station, Forest Service, U.S. Dept. of Agriculture, 1973. | |
| A guide to hardwood log grading / by Everette D. Rast, David L. Sonderman, Glenn L. Gammon. Rast, Everette D. cn Upper Darby, Pa. : Forest Service, U.S. Dept. of Agriculture, Northeastern Forest Experiment Station, 1973. | |
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