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101 0 $aeng
181   $ctxt$2rdacontent
182   $cc$2rdamedia
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200 00$aIERS technical note
210   $aParis, France $cCentral Bureau of IERS
215   $a1 online resource
311   $aPrint version: IERS technical note. 1019-4568 
606   $aTime$vPeriodicals
606   $aTime measurements$vPeriodicals
615  0$aTime
615  0$aTime measurements
712 02$aCentral Bureau of IERS.
712 02$aInternational Earth Rotation Service.
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920   $aexl_impl conversion
996   $aIERS technical note$92002793
997   $aUNINA