Books

1. Frontiers of Astronomy in 1990s: Beijing, P.R. China 30 October-6 November 1992
   

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2. Reports on Astronomy (Transactions of the International Astronomical Union, Vol 20a)
   

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3. The Earth and Space (Batsford Signposts to Science Series)
   

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4. Transactions of the International Astronomical Union:Reports on Astronomy
   

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5. Neptuno (Asimov, Isaac, Isaac Asimov Biblioteca Del Universo Del Siglo Xxi. Sistema Solar.)
   

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Books