Sky with ocean joined proceedings of the sesquicentennial symposia on sky with ocean joined of the U.S. Naval Observatory, December 5 and 8, 1980 - Sesquicentennial Symposia on Sky with Ocean Joined of the U.S. Naval Observatory U. S. Naval Observatory 1980 Dec. 5-8; Dick, Steven J., ed.; Doggett, LeRoy E., ed. (Washington U. S. Naval Observatory, 1983)
Keywords: Astronomy and Astrophysics thesaurus; Astronomy-History; History-Astronomy