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200 1 $aIEEE recommended practice for grounding of industrial and commercial power systems$fInstitutte of electrical and electronics engineers
210   $a[New York]$cIEEE$dc1992
215   $a234 p.$cill.$d25 cm
300   $aIEEE Std 142-1991 (revision of IEEE Std 142-1982)
300   $aIn copertina "IEEE green book"
610 0 $aCorrente elettrica - messa a massa - Standard
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710 01$aInstitute of Electrical and Electronics Engineers
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