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200 1 $aIEEE recommended practice for the design of reliable industrial and commercial power systems$fInstitute of electrical and electronics engineers
210   $aNew York$cInstitute of electrical and electronics engineers$dc1991
215   $a415 p.$cill.$d25 cm
300   $aIEEE Std 493-1990 (revision of IEEE Std 493-1980)
610 0 $aTrasmissione dell'energia elettrica - Standard
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710 01$aInstitute of Electrical and Electronics Engineers$013354
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