El Hamchary, Hassan Waves & Antennas For 4th year / [[Book] :] Hassan El Hamchary. - Cairo : October 6 University., 2007. - [80 p] : ill ; 28 cm. All age. Subjects--Topical Terms: waves Electricity. Dewey Class. No.: 621.3 National Library of Medicine Call No.: 621.3 / E W