The product is a textbook titled “Using C on the Unix System” by Dave Curry, published by O’Reilly Media, Incorporated in 1989. It is part of the Nutshell Handbooks Series and is focused on the subject areas of operating systems, unix, and programming languages. The book is written in English and is in trade paperback format, measuring 9 inches in length, 6 inches in width, and 0.6 inches in height. It contains 250 pages and weighs 14.3 ounces.