The product is a set of 12 CDs titled "Sum and Substance Professional Responsibility" by author John Dzienkowski. It is an audiobook in English published by West Academic. The content focuses on professional responsibility, offering in-depth analysis and insights for those interested in this area of expertise. This comprehensive audio collection is designed to educate and inform listeners on various aspects of professional responsibility in both the legal and ethical contexts. You save $! Check out our many other EBAY listings.