The Hinge Factor: How Chance and Stupidity Have Changed History by Durschmied, Erik at AbeBooks.co.uk - ISBN 10: 1559705159 - ISBN 13: 9781559705158 - Arcade Pub - 2000 - Hardcover
The Weather Factor: How Nature Has Changed History by Durschmied, Erik at AbeBooks.co.uk - ISBN 10: 0340768061 - ISBN 13: 9780340768068 - Coronet Books/ Hodder and Stoughton - 2001 - Softcover