Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
Authors
Schopf, J. W. (University of California Los Angeles 90024) Date Acquired
August 22, 2013
Publication Date
July 19, 1994
Publication Information
Publication: Proceedings of the National Academy of Sciences of the United States of America
Volume: 91
Issue: 15
ISSN: 0027-8424
Distribution Limits
Public
Keywords
ReviewNon-NASA CenterNASA Discipline ExobiologyReview, Tutorial