TY  - BOOK
ED  - United States.
TI  - Trees
T2  - Its Yearbook of agriculture,
AV  - S21 .A35 1949
U1  - 634.90973 
PY  - 1949///]
CY  - Washington
PB  - U.S. Govt. Print. Off.
KW  - Trees
KW  - United States
KW  - Forests and forestry
N1  - Includes index; "For further reference": p. 901-910
ER  -