THE PROFESSIONAL AND ACC LECTURES are the day-to-day record of research and development. Here are Ron's in-depth instructions and demonstrations to auditors on the application of the breakthroughs announced in Congresses. As a complete series, these lectures are best studied chronologically after the Basics. However, since they are the wellspring for the bulk of today's auditing processes, they also form an indispensable body of reference material for trained auditors and, in this wise, can be studied individually to learn the whys and wherefores of every specific process or technical subject—data never before available and found nowhere else.