What You Should Know about Proficiency Testing (Ray Clifford)
Presented by Ray T. Clifford November 2006
Click on the links below to view this presentation.
These files are saved in .mov format.
Intro (7:41, 8.5MB)
Part I (28:47, 29.1MB)
Part II (24:10, 27.4MB)
Part III (13:49, 15.3MB)
Part IV (9:03, 10.1MB)
Part V (8:02, 9.2MB)