Ismael
Pérez Fournon
Profesor Titular Universidad
![Foto de Ángeles](/img/nophoto.png)
Ángeles
Díaz Beltrán
Publikationen, an denen er mitarbeitet Ángeles Díaz Beltrán (1)
1990
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The extended narrow line region of NGC 4151 I. Emission line ratios and their implications
Astronomy and Astrophysics, Vol. 236, pp. 53-62