TY  - BOOK
ED  - Yearbook of Agriculture,
ED  - E.U.A. Department of Agriculture.
TI  - Trees
U1  - 630.5 
PY  - 1949///
CY  - Washington
PB  - Government Printing Office
KW  - Árboles
KW  - E.U.A
KW  - Bosques
N1  - 1992-1169
ER  -