TY  - RPRT
TI  - Classification tree and minimum-volume ellipsoid analyses of the distribution of ponderosa pine in the western USA
AU  - Jodi R. Norris
AU  - Stephen T. Jackson
AU  - Julio L. Betancourt
PY  - 2006
UR  - https://pubs.usgs.gov/publication/70003893
ID  - 70003893
ER  -