The Level 3 NVQ Diploma in Plumbing and Heating 6189 Paperback Units 302, 303, 344 is a technical textbook written by Michael B Maskrey and Neville Atkinson. Published in 2014 by City & Guilds, this English language book is specifically tailored for adult and further education students studying building services engineering, with a focus on plumbing and heating. The paperback format makes it convenient for learners to study and reference while pursuing their education in this subject area.