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1988AJ.....96..233H - Astron. J., 96, 233-241 (1988)
The Einstein galactic plane survey. II. Optical observations of northern hemisphere X-ray sources.
HERTZ P. and GRINDLAY J.E.
Journal keyword(s):
Nomenclature: Table I: 1E HHMM.m+DDMM N=67
CDS comments: Table II: stars in error boxes, format 'A', are not in SIMBAD
Simbad objects: 67
