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Guide to grading defects in ponderosa and sugar pine logs

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By: Jackson, Willard L. - Pacific Southwest Forest and Range Experiment Station (Berkeley, Calif.)

Publication info: Berkeley, Calif, Pacific Southwest Forest and Range Experiment Station, Forest Service, U.S. Dept. of Agriculture, 1962

Holding Institution: U.S. Department of Agriculture, National Agricultural Library
A trial of direct control of pine engraver beetles on a small logging unit

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By: Jackson, Willard L.

Publication info: Berkeley, Calif, Pacific Southwest Forest and Range Experiment Station, [1960]

Holding Institution: U.S. Department of Agriculture, National Agricultural Library