- Author: Barbara Ryden Bradley Peterson
- Language: English
- Year: 2010
Astronomie
pdf
- Author: Karl Schwarschild Samuel Oppenheim Walter von Dyck (eds.)
- Language: German
- Year: 1922
Astronomie
pdf
- Author: Karl Schwarschild Samuel Oppenheim
- Language: German
- Year: 1905
- Author: Baidyanath Basu Tanuka Chattopadhyay Sudhindra Nath Biswas
- Language: English
- Year: 2010
靈界的科學
pdf
- Author: 李嗣涔
- Language: Traditional Chinese
- Author: Marc Lachièze-Rey, Edgard Gunzig
- Language: English
- Year: 1999
- Author: Donald E. Osterbrock Gary J. Ferland
- Language: English
- Year: 2006
- Author: Donald E. Osterbrock Gary J. Ferland
- Language: English
- Year: 2006
- Author: Qinglei Hu, Bing Xiao, Bo Li, Youmin Zhang
- Language: English
- Year: 2021