keyword: thema EDItEUR::3 Time period qualifiers::3M c 1500 onwards to present day::3MP 20th century, c 1900 to c 1999::3MPQ Later 20th century c 1950 to c 1999::3MPQZ c 1990 to c 1999 – 0 free books.

These OSI Approved License licensed ebooks are free to read - the people who created them want you to read and share them.

Open source licenses are licenses that comply with the Open Source Definition — in brief, they allow software to be freely used, modified, and shared. To be approved by the Open Source Initiative (also known as the OSI), a license must go through the Open Source Initiative's license review process.