The product is a textbook titled “Supplements Ser.: Rules of Contract Law : 2019-2020” authored by Nathan M. Crystal, Harry G. Prince, and Charles L. Knapp. Published by Wolters Kluwer Legal & Regulatory U.S. in 2019, this book is part of the Supplements Ser. It covers the subject area of law, specifically focusing on legal education and contracts. With a length of 10 inches and a width of 7 inches, this book contains 480 pages and is written in English.