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100   $a20030910d1982----km-y0itay50------ba
101 0 $aeng
102   $aUS
105   $aa-------001yy
200 1 $aBroadcasting in America$ea survey survey of television, radio, and new technologies$fSydney W. Head with Christopher H. Sterling
205   $a4. ed.
210   $aBoston$cHoughton Mifflin$d1982
215   $aXIV, 642 p.$cill.$d24 cm
610 0 $aRadiotrasmissioni$aStati Uniti d'America
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700  1$aHead,$bSydney W.$0142519
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996   $aBroadcasting in America$9508596
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