Western Lumber Grading Rules 2021
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New edition of WWPA Grading Rules for Douglas Fir, Engelmann Spruce, Hemlock-True Firs, Idaho White Pine, Incense Cedar, Lodgepole Pine, Ponderosa Pine, Sugar Pine, Western Larch and Western Red Cedar. Includes Base Design Values. 252 pages, pocket book, 3 3/4'' x 6 1/2". (10/20)