The Arthurian Handbook
Geoffrey Ashe & Norris J. Lacy & Debra N. Mancoff
Causation and Laws of Nature
Max Kistler
Validating RDF Data
Jose Emilio Labra Gayo & Iovka Boneva & Eric Prud'Hommeaux & Dimitris Kontokostas
The World Turned Upside Down
David Drake & Eric Flint & Jim Baen
Is God a Mathematician?
Mario Livio
Marx,K./Engels,F.[..] Werke
Karl Marx & Friedrich Engels