Protoplanetary nebula

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91	PDF Document Add to Reading List Source URL: www.aanda.org Language: English Space Astrophysics Asymptotic giant branch Protoplanetary nebula Circumstellar envelope Red giant Stellar classification Cosmic distance ladder Planetary nebula Stellar evolution Astronomy Star types
92	PDF Document Add to Reading List Source URL: www.maik.ru Language: English - Date: 2007-12-06 06:22:22 Planetary science Asymptotic giant branch Star Atmosphere Protoplanetary nebula Astronomy Stellar evolution Space
93	PDF Document Add to Reading List Source URL: arxiv.org Language: English - Date: 2011-01-26 20:07:09 Space Astrophysics Protoplanetary nebula Nebula Variable star Asymptotic giant branch Wolf–Rayet star Star Carbon star Stellar evolution Astronomy Star types