This report is presented in Portable Document Format.
Adobe Acrobat Reader™ (v. 4.0 or later) is required to view it.
If you already have Acrobat Reader installed on your computer,
click here to access the text (0.2 Mb).
If you wish to download Acrobat Reader free of charge, click here.
For more information about this report contact: gmatos@usgs.gov or lawagner@usgs.gov
Originally printed in Annual Reviews of Energy and the Environment, 1998, v. 23, p. 107-122.
AccessibilityFOIAPrivacyPolicies and Notices
