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200 1 $aMicrowave tubes and semiconductor devices$fG. D. Sims and I. M. Stephenson
210   $aLondon$cBlackie and son$dc1963
215   $a388 p.$cill.$d25 cm
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701  1$aStephenson,$bIan Meredith$027135
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996   $aMicrowave tubes and semiconductor devices$91204325
997   $aUNIPARTHENOPE