TY  - BOOK
AU  - Rose, Robin.
TI  - Grading Ponderosa pine seedlings for outplanting according to their root volume
KW  - Pináceas
KW  - Plántulas
KW  - Pinus ponderosa
KW  - Propagación de árboles
KW  - Raíces
N1  - Sobretiro de: Western Journal of Applied Foresty 6 (1): 11-15, 1991
ER  -