Piaget and Inhelder: On Equilibration
J. M. Gallagher & C. F. Nodine & R. D. Humphreys
The Child's Conception of Movement and Speed
Jean Piaget
Concrete Mathematics: A Foundation for Computer Science
Ronald L. Graham & Donald Ervin Knuth & Oren Patashnik
Geometry of Sets and Measures in Euclidean Spaces: Fractals ...
Pertti Mattila
X-Men and Philosophy: Astonishing Insight and Uncanny Argument ...
William Irwin & Rebecca Housel & J. Jeremy Wisnewski
Lost Capital of Byzantium: The History of Mistra and the Peloponnese
Steven Runciman
Life of Constantine
Eusebius & Averil Cameron & Stuart George Hall
How on Earth Did Jesus Become a God?: Historical Questions About ...
Larry W. Hurtado
God's Battalions: The Case for the Crusades
Rodney Stark
Gnosis: The Nature and History of Gnosticism
Kurt Rudolph
Dungeon, Fire and Sword: The Knights Templar in the Crusades
John J. Robinson
Constantinople in the Age of Justinian
Glanville Downey
Cities of God: The Real Story of How Christianity Became an ...
Children of Cain: A Study of Modern Traditional Witches
Michael Howard
Byzantine Style and Civilization
Byzantine Philosophy and Its Ancient Sources
Katerina Ierodiakonou
Byzantine Christianity: A Very Brief History
Averil Cameron
Arab Historians of the Crusades
Francesco Gabrieli
An Agnostic Defends God: How Science and Philosophy Support ...
Bryan Frances
Agnosticism, Atheism, Monism
Helena Petrovna Blavatsky
Agnosticism: Explorations in Philosophy and Religious Thought
Francis Fallon & Gavin Hyman
A History of the Crusades: Volume 2, the Kingdom of Jerusalem
A History of the Crusades, Vol. 3 The Kingdom of Acre and the ...
A History of the Crusades: Volume 1, the First Crusade and the ...
A History of Pagan Europe
Prudence Jones & Nigel Pennick