| | ARRL's Extra Q & A(2nd Edition) Upgrade to an Extra Class Ham License! by Ward Silver, Arrl Inc., Mark Wilson, Stephen John Horan, Stephen Horan, Maty Weinberg Paperback, 1 Pages, Published 2008 by Amer Radio Relay League ISBN-13: 978-0-87259-137-0, ISBN: 0-87259-137-9
"This third edition of ARRL's Extra Q & A is your authoritative guide to every question in the Extra (Element 4) question pool--everything you need to pass the top-level Amateur Radio license exam! With more than 700 questions included in the question pool, using ARRL's Extra Q & A is the best way to review for the exam with confidence.Pass the 50-question (Element 4) testIncludes the latest question pool with answer key, for use through ..."
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