Lexikon der Päpste: Kirchengeschichte, Weltgeschichte, Zeitgeschichte ...
Hans Kühner
Logic-Based Knowledge Representation
Frank van Harmelen & Peter Jackson & Han Reichgelt
Scenarios for the Future of Technology and International Development
Rockefeller Foundation
Thomas Nagel
Alan Thomas
Knowledge and Development: Volume 2 Piaget and Education
J. M. Gallagher
The Crusades: Biographies
J. Sydney Jones
The Crusades: Primary Sources