TY  - RPRT
TI  - Topographic, bioclimatic, and vegetation characteristics of three ecoregion classification systems in North America: Comparisons along continent-wide transects
AU  - R.S. Thompson
AU  - S.L. Shafer
AU  - K. H. Anderson
AU  - L.E. Strickland
AU  - R.T. Pelltier
AU  - P. J. Bartlein
AU  - M.W. Kerwin
PY  - 2005
DO  - 10.1007/s00267-003-7200-3
UR  - https://pubs.usgs.gov/publication/70029206
ID  - 70029206
ER  -