Hoshizaki, H., A. D. Wood, J. C. Andrews, K. H. Wilson.
National Council on Radiation Protection and Measurements
International Astronomical Union.; Mihalas, Dimitri; Winkler, K.-H. A., eds.
Frederick A. Smith, F. A. Hill, et al
Siegel, David S.; Siegel, Susan
Wetmore-Savage Company
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