Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
Authors
Ward, W. R. (Smithsonian Astrophysical Observatory and Harvard College Observatory Cambridge, Mass., United States) Date Acquired
August 8, 2013
Publication Date
August 1, 1975
Publication Information
Publication: Science
Volume: 189
Subject Category
Lunar And Planetary Exploration Accession Number
75A38750
Funding Number(s)
CONTRACT_GRANT: NGR-22-007-269
CONTRACT_GRANT: NSF GP-40776
Distribution Limits
Public