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  The Half Million Quasars (HMQ) catalogue (Flesch, 2015)
Post annotation
1.VII/273/refsReferences (2171 rows)

Query by Constraints constraints help applied on Columns (Output Order: + - )
ShowSortColumn  Constraint Explain   (UCD)
  recno  Record number assigned by the VizieR team. Should Not be used for identification. (meta.record)
  Ref   [1/2171] Reference number (;meta.main)
  NName  (n) Count of times used as a citation for the name. (excluding type 2) (Note 1)   (meta.number)
  Nz  (n) Count of times used as a citation for the redshift. (excl. type 2) (Note 1)   (meta.number)
  BibCode (char) BibCode (meta.bib.bibcode)
  Details (char) Standard authors list, year, journal volume & page, and sometimes a brief description or website (meta.note)

ALL cols
(n) indicates a possible blank or NULL column(i)indexed column
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usage  Display UCD1+    UCD1  
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