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1992MNRAS.255..325P - Mon. Not. R. Astron. Soc., 255, 325-345 (1992)
The primordial helium abundance from observations of extragalactic HII regions.
PAGEL B.E.J., SIMONSON E.A., TERLEVICH R.J. and EDMUNDS M.G.
Journal keyword(s):
Nomenclature: Table 1: [PST92] I Zw 18 Knot N (Nos 1-2). Table 5: [PST92] Mkn 600 Knot N (Nos 1-2).
Simbad objects: 40
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