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101 0 $aeng
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200 1 $aProtective relays$etheir theory and practice$fC. Warrington
205   $a2nd ed.
210   $aLondon$cChapman$dc1974
215   $a2 v.$cill.$d23 cm
300   $a2. volume
610 0 $aRelè elettrici protettivi
676   $a621.317
700  1$aWarrington,$bAlbert Russell van Cortlandt$0303580
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