Sign in | English | Terms of Use
DictionaryForumContacts

   German ⇄
Google | Forvo | +
verbotene Linie
earth.sc. forbidden line
verbotene Linien
opt. forbidden spectral lines

 The server is undergoing maintenance and the site is working in read-only mode. Please check back later.">Add | The server is undergoing maintenance and the site is working in read-only mode. Please check back later.">Report an error | Get short URL | Language Selection Tips