nd in the literature with the formats HHMM.mNDDMMA and HHMM.mSDDMMA instead of '+' and '-'. Superseded by WDS. See also PMSC.
, VAN DEN BOS W.H., GREEBY F.M.
Publ. Lick Obs. 21,part 1,1963, 0-None (1963)
Index catalogue of visual double stars, 1961.0.
opart 1 (263pp) + part part 2 (804pp).
o<IDS HHMMm+DDMMAAAA> N=about 64000.
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