I have a whole set of books broken up into lots. Save money and buy them lightly used. The product is a textbook titled “Applied Science Of Instrumentation Grounding & Bonding Codeology 2017 NJATC.” It is authored by NJATC and focuses on the subject of applied sciences, specifically covering topics related to instrumentation grounding and bonding. This textbook serves as a valuable resource for students and professionals in the field, providing essential information and guidance on best practices in this specialized area of study.