NLS_LANG: What are the default charactersets for the different languages settable in NLS_LANG

This is in NLS_LANG facts:
Charset

Specifies the character set used by the client application (normally the Oracle character set that corresponds to the user's terminal character set or the OS character set). Each supported character set has a unique acronym, for example, US7ASCII , WE8ISO8859P1 , WE8DEC , WE8MSWIN1252 , or JA16EUC . Each language has a default character set associated with it.

It is also true that each territory has a default language.  Where is the table of defaults?