TY  - BOOK
AU  - McDonald, Philip M.
AU  - Fiddler, Gary O.
TI  - Ponderosa pine seedlings and competing vegetation: : ecology, growth, and cost
T2  - Research paper
PY  - 1990///
CY  - Berkeley, Ca
PB  - Forest Service. Pacific Southwest Research Station
KW  - Ecología forestal
KW  - Pináceas
KW  - Crecimiento
KW  - Semilla
KW  - Pinus ponderosa
ER  -