00289nam a2200109Ia 4500008004100000040003800041100001500079245002700094250000600121260004100127300001100168211214s9999    xx            000 0 und d  cJayakar Knowledge Resource Centre  aBoltz, C L 0aWireless for beginners  a4  bGeorge Allan and UnwinaLondonc1933  a258 p.