Reference 1
Brier, Bob
1998
The murder
of Tutankhamen
Weidenfeld and Nicholson
Back
Reference
2
Shipstone, David
1998
How long the days are
School Science
Review Volume 79 Number 289
Back
Reference
3
Walker, Christopher (ed)
1996
Astronomy before the telescope
British Museum
Press
Back
Reference 4
Sobeo, Dava
1996
Longitude
Fourth
Estate Limited
Back
Reference 5
Hellemans, Alexander
and Bunch, Bryan
1988
The timetables of science
Simon and Schuster
Back
Reference
6
Scarre, Chris
1993
Dorling Kindersley
Timelines of the ancient world
Back
Reference
7
Whitrow, G J
1988
Time in history
Oxford University Press
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Reference
8
Encyclopaedia Britannica
Thanks to John, who posted me this reference
on the Internet
Back
Reference 9
The
Cambridge Encyclopaedia of astronomy
Mitton, Simon (editor)
1977
Jonathan Cape
Back
Reference
10
The Calendar
David Ewing Duncan
1998
The Fourth Dimension
Back
Reference
11
Mapping Time - The Calendar and its history
E G
Richards
Oxford University Press
1998
This book is used as a reference several times - use the BACK button on your browser
Reference
12
The Year 1000
Robert Lacey and Danny Danziger
Little, Brown
and Company
1999
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A history of engineering in classical and mediaeval times
Donald
Hill
Routledge
1984
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Times Educational Supplement
August 13th 1999
From the Web Site of the Department of Geology at the University of Edinburgh
September 1999
Thanks to Charles who drew my attention to this