na YOGYA000000000060462 20150427130309.0 0010-081400000060179 621.384 aml R The Radio Amateurs handbook : the standard manual of amateur radio communication Ed. 3 U.S.A The Rumford Press 1956 569 hlm. ; 21 cm. Bibliografi : hlm. 380 Radio Amatir YOPDYOG 54079-p