Defining regions for evaluating environmental resources
By: James M. Omernik and Alisa L. Gallant.
Contributors: Gallant, Alisa L.; Corvallis Environmental Research Laboratory.
Publisher: U.S. EPA Environmental Research Laboratory
Published: 1989
Place of publication: Corvallis, Or
Language: eng
Number of pages: 12
Subjects: Ecology -- United States.
Notes: Caption title.

"For presentation at Global Natural Resource Monitoring and Assessment: Preparing for the 21st Century, Venice, Italy, Sept. 24-30, 1989."

Includes bibliographical references (leaves [10]-[12])