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Plain-English Study Guide for the General Radiotelephone Operator License (GROL): Clem, Richard P., Clem, Yippy G.: 9781482612448: Amazon.com: Books
Tests - Answers for FCC General Radiotelephone Operator License Updated Multiple-Choice Tests from the actual FCC exam Plus Radar Endorsements Tests - Warren Weagant: 9780933132191 - AbeBooks
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Pass Your GROL General Radiotelephone Operator License Test - The Easy Way: Elements 1 & 3 (EasyWayHamBooks): Buck K4IA, Craig: 9781095818602: Amazon.com: Books