2001-098.pdf
(8.58 MB)
Research Type
Physical Sciences/Modeling
Region
Programmatic Studies
Publication Year
English
Is External
Off
Official websites use .gov
A .gov website belongs to an official government organization in the United States.
Secure .gov websites use HTTPS
A lock ( ) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.
U.S. Department of the Interior