Heebink, 1., Norris, 1., & Products Laboratory (U.S.), F. (1962). Supplement to: Buckling of stiffened, flat, plywood plates in compression : A single stiffener perpendicular to stress. Face grain of plywood at 45 degrees to its edges. : Madison, Wis. : U.S. Dept. of Agriculture, Forest Service, Forest Products Laboratory.