Article Information
vol. 266 no. 5192 1839-1843
PubMed:
Published By:
Print ISSN:
Online ISSN:
History:
- Received for publication July 25, 1994
- Accepted for publication November 1, 1994
- .
Copyright & Usage:
1994 by the American Association for the Advancement of Science
Author Information
- 1Department of Earth and Planetary Sciences, Johns Hopkins University, Baltimore, MD 21218, USA, and Laboratory for Terrestrial Physics, NASA/Goddard Space Flight Center, Greenbelt, MD 20771, USA.
- 2Laboratory for Terrestrial Physics, NASA/Goddard Space Flight Center, Greenbelt, MD 20771, USA.
- 3Laboratory for Terrestrial Physics, NASA/Goddard Space Flight Center, Greenbelt, MD 20771, USA, and Astronomy Department, University of Maryland, College Park, MD 20742, USA.
- 4Department of Earth and Planetary Sciences, Johns Hopkins University, Baltimore, MD 21218, USA.
