Spiral Dynamics in Action: Humanity's Master Code
Don Edward Beck & Thomas Q. Johns & Teddy Hebo Larsen & Sergey Solonin & Rica Viljoen
From Dictatorship to Democracy: A Conceptual Framework for Liberation
Gene Sharp
Understanding Psychosis: Issues and Challenges for Sufferers, ...
Donald Capps
97 Things Every Scrum Practitioner Should Know
Gunther Verheyen
The Heart of Plotinus: The Essential Eneads Including Porphyry's ...
Algis Uždavinys
Duelling Idiots and Other Probability Puzzlers
Paul J. Nahin
Princeton Puzzlers (1)