L. Ron Hubbard - E-Meter Talk & Demo
https://www.youtube.com/watch?v=VawsWafClWQ
L. Ron Hubbard - Assessment
https://www.youtube.com/watch?v=eW4uOgcMMe0
L. Ron Hubbard - The E-Meter
https://www.youtube.com/watch?v=5D4PxUmAZNw
L. Ron Hubbard - On Auditing...