Encyclopedia of Human Geography
Gerald Rudolph Pitzl
Ken Wilber - Filosofía Transpersonal
Ángel Rguez
The Web of Meaning: Integrating Science and Traditional Wisdom
Jeremy Lent
Phenomenological Epistemology
Henry Pietersma
The Child's Conception of Physical Causality
Jean Piaget
Guitar Scales and Modes Trainer
Robert Farrell