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1998ApJ...501..221G - Astrophys. J., 501, 221-227 (1998/July-1)
Are He and N abundances in type I planetary nebulae as high as empirically derived?
GRUENWALD R. and VIEGAS S.M.
Abstract (from CDS):
Abstract Copyright: ∼
Journal keyword(s): ISM: Abundances - ISM: Planetary Nebulae: General
Simbad objects: 2
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