TY  - BOOK
AU  - Clawson, Marion.
TI  - Man, land, and the forest environment
T2  - The Geo. S. Long publication series
U1  - 573.4 
PY  - 1977///
CY  - Seattle
PB  - University of Washington
KW  - Bosques
KW  - E.U.A
KW  - Impacto ambiental
KW  - Tierras
KW  - Utilización
ER  -