TY  - BOOK
AU  - Betts, Harold S.
AU  - Betts, Norman Dewitt, ded.
TI  - Timber, its strength, seasoning, and grading
U1  - 634.98 21st ed.
PY  - 1919///
CY  - New York
PB  - McGraw-Hill
KW  - Strength of materials
KW  - Timber-United States
KW  - Wood-Testing
N1  - Index: pp 225-34
ER  -