00553naa#a2200181#i#450# EN\\bibl\52931 20250131134434.5 2587-9936 20210625b2021####ek#y0engy0150####ca RUS RU History of amateur radio in Sevastopol Journal article Sevastopol Federal State Educational Institution of Higher Education Sevastopol State University 2021 14 с. Journal article local . 621.396(091) RUS Puzankov Leonid A. rusjbpc.ru