ITU-T P.561 PDF

Published Date: 07/01/1996

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Published Date: 03/01/1993

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Published Date: 09/01/1998

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Published Date: 02/18/2015

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Published Date: 01/24/2018

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Published Date: 02/16/2024

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Published Date: 11/07/2012

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Published Date: 06/15/2016

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Published Date: 06/15/2016

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