In today's online world, do books still have a part to play? Absolutely!
Books can provide you with reliable information you can count on and include in your works cited/reference page. They often provide:
The Library of Congress classification for HVACR is TH7000. More specifically, TH7000 is broken down as follows:
Browsing in any of these areas may lead to the discovery of valuable material in addition to the specific items listed in this guide.