@base . . a . a ; . , ; "Electromagnetic waves :" ; ; ; ; ; ; ; "Electromagnetic waves (Cambridge, Mass. Online)" , "Electromagnetic waves :" ; ; "http://www.jpier.org/PIER/" , "http://bibpurl.oclc.org/web/44777" . a , ; "Electromagnetic waves (Cambridge, Mass. Online)" . a ; "1070-4698" ; . "Massachusetts" . a ; "20230510115436.416727"^^ ; ; .