Problem Solving in Automata, Languages, and Complexity
Ding-Zhu Du & Ker-i Ko
The Science of Knowledge: with the First and Second Introductions
J. G. Fichte
Judgement and Reasoning in the Child
Jean Piaget
The Archetypes and the Collective Unconscious
Carl Gustav Jung
Analysis of AC-Circuits
Test
Gnostic Book of Hours: Keys to Inner Wisdom
June Singer