Grading Rules

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, 3 3/4'' x 6 1/2".

Available in English language and Spanish language. (perfect binding or coil binding.)