- Author: Howard Georgi
- Language: English
- Year: 1999
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- Year: 2001
Back to the Astronomy Cafe: more questions and answers about the cosmos from ''Ask the astronomer''
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- Language: English
- Year: 2003
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- Language: English
- Year: 1998
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- Year: 1974
- Author: Michael Atiyah
- Language: English
- Year: 1994
