The Dark Universe: Matter, Energy and Gravity
Mario Livio
Solitons, Instantons, and Twistors
Maciej Dunajski
Vampire$
John Steakley
Negative Indefinites
Doris Penka
Late Merovingian France
Paul Fouracre & Richard A. Gerberding
The Inheritance of Rome: Illuminating the Dark Ages 400-1000
Chris Wickham
Penguin History of Europe (2)