[Corvallis, Or.] : Corvallis Environmental Research Laboratory, U.S. Environmental Protection Agency, 1986
Physical Details
1 map : color ; 43 x 66 cm, folded to 22 x 17 cm
OCLC
ocm16715777
Cartographic Data
Scale 1:7,500,000
Table includes notes on land-surface form, potential natural vegetation, land use, and soils.
"Supplement to the Annals of the Association of American Geographers, volume 77, number 1."
On verso: Table 1, Characteristics of ecoregions in the conterminous United States as shown on the four component maps used to determine ecoregion boundaries.