Knigi.7z
Install 7-Zip or WinRAR. Right-click the file and select "7-Zip > Extract to 'Knigi'" .
Use The Unarchiver or Keka , as the default Archive Utility may not support .7z . Mobile: Use apps like ZArchiver (Android) or iZip (iOS). 2. Reading the Contents Knigi.7z
Once extracted, you will likely find eBook files. To read them: Install 7-Zip or WinRAR