Can. 826 § 2 To reprint liturgical books, their translations into the vernacular, or their parts, an attestation of the ordinary of the place where they are published must establish their agreement with the approved edition.
Also, I find the fact quite scandalous, that an antiphonale according to the OCO 1983 seemingly hasn't ever been assembled
Here's a routine reminder: Be discriminating but don't nitpick.
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