Piaget—a Practical Consideration: A Consideration of the General ...
G. A. Helmore
Early Greek Philosophy
Various
Great Treasury of Western Thought
Mortimer Jerome Adler & Charles van Doren
The Kantian Philosophy of Space
Christopher Browne Garnett
Philosophy of Logical Systems
Jaroslav Peregrin
The problem of the obelisks, from a study of the unfinished ...
Reginald Engelbach