A nice touch in this textbook is the list of key people and their contributions.
Item Tag: 9781455926237
NFPA 54 ANSI Z223.1 National Fuel Gas Code 2021 Paperback
This textbook is part of a series, but it works perfectly on its own.
NFPA 54 ANSI Z223.1 National Fuel Gas Code 2021 Paperback USA STOCK FREESHIP
You will find that this textbook breaks down difficult topics into manageable chunks.