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The Spanish Civil War (Paperback, Cassell military, Orion Publishing Group, Limited)
America's Longest War (1995, McGraw-Hill Companies)
Giap (W. W. Norton & Company)
Napoleon (Hardcover, Norwegian language, 1941, H. Aschehoug & Co. (W. Nygaard))
London (Paperback, 1980, Penguin Books)
A synopsis of American history (1992, I.R. Dee)
Economics in Minutes (2014, Quercus)
The Solar System in Minutes (Paperback, 2018, Quercus Editions Ltd.)
Physics in Minutes (2014, Quercus Editions Ltd.)
New Scientist Why the Universe Exists (2017, Nicholas Brealey Publishing)
Humble Pi (2021, Riverhead Books)
The Order of Time (2019)
Why Does E=mc2? (EBook, 2009, DaCapo Press)
The Mythology in Our Language (HAU Books)
Maskiner som tenker (Hardcover, Norwegian language, 2023, Kagge Forlag)
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