| 词条 | Book:Formal Science |
| 释义 |
|title= |subtitle= |cover-image= |cover-color= | setting-papersize = a4 | setting-toc = auto | setting-columns = 2 }} Physical Science I AstronomyBranch of Natural Nciencewith Formal SystemsAstrophysics Cosmology Galactic astronomy Planetary geology Planetary science Star |
| 随便看 |
|
开放百科全书收录14589846条英语、德语、日语等多语种百科知识，基本涵盖了大多数领域的百科知识，是一部内容自由、开放的电子版国际百科全书。