TY  - BOOK
AU  - Preston, Richard Joseph.
TI  - North american trees: : exclusive of Mexico and tropical Florida
U1  - 582.16 
PY  - 1989///
CY  - Ames, Iowa
PB  - State University
KW  - Árboles
KW  - Canada
KW  - E.U.A
KW  - Identificación
ER  -