... Catalogue

The USNOFS Image and Catalogue Archive is operated by the United States Naval Observatory, Flagstaff Station.

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... (NRAO

NRAO is a facility of the National Science Foundation operated under cooperative agreement by Associated Universities, Inc.

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...1978

We note that there is a typographical error in the right ascension of GGD 19 as given in the paper by Gyulbudaghian et al. (1978).

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