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BSS Bulletin 1989 to 1999

F. Coe, private communication

C. St.J. Daniel: Sundials. Shire Publications, Princes Risborough

P. Duffett-Smith: Easy PC Astronomy. Cambridge University Press, Cambridge, 1997.

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J. Meeus: Astronomical Algorithms. (2nd edition). Willmann-Bell, Richmond, 1998.

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NASS Compendium 1994 to 1999.

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