ISBN 9781625951953 books & textbook
Gordon West Extra Class FCC Element 4 Amateur Radio License Preparation 9th Edition 2024-2028
ARRL Inc. Gordon West WB6NOA Eric P. Nichols KL7AJ
ARRL The National Association for Amateur Radio® /2024-06-01 Paperback / 286 Pages
isbn-10: 1625951957 / isbn-13: 9781625951953
