TY  - BOOK
AU  - Heilman,Paul E.
AU  - Anderson,Harry W.
AU  - Baumgartner,David M.
TI  - Forest soils of the douglas-fir region / 
U1  - 531 
PY  - 1979///
CY  - Washington : 
PB  - Washington State University, 
KW  - SUELO FORESTAL
ER  -