Visual Complex Functions: An Introduction With Phase Portraits
Elias Wegert
The Sociolinguistics of Globalization
Jan Blommaert
Cambridge Approaches to Language Contact (1)
The Big Book of Concepts
Gregory Leo Murphy
Nikola Tesla, Electrical Genius
Arthur J. Beckhard
emrgnc - Ken Wilber's 20 tenets
Kenneth E. Wilber
Psychedelics Encyclopedia
Peter G. Stafford & Jeremy Bigwood