1. ANSI A208, 2-1994;American National Standard,1994
2. ANSI A208. 1-1993;American National Standard,1993
3. APA PRA-108;American Plywood Association,1994
4. ASTM D1037-87;American Society of Testing Methods,1989
5. ASTM D4761-88;American Society of Testing Methods,1989