TY  - RPRT
TI  - A New Map of Standardized Terrestrial Ecosystems of the Conterminous United States
AU  - Roger G. Sayre
AU  - Patrick Comer
AU  - Harumi Warner
AU  - Jill Cress
PY  - 2009
DO  - 10.3133/pp1768
UR  - https://pubs.usgs.gov/publication/pp1768
ID  - pp1768
ER  -