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SPECiriC GRAVITY-STRENGTH 
RELATIONS ECR WOOD 
October 1941 
rt is m 01 \ is one cr a secies issued 
TO AID THE NATION'S DEFENSE EEFORT 
No. 13€3 
UNITED STATES DEPARTMENT OF AGRICULTURE 
FOREST SERVICE 
FOREST PRODUCTS LABORATORY 
Madison, Wisconsin 
In Cooperation with the University of Wisconsin 
