Google Inc.
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Goodreads
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Audible, Inc
Inkitt GmbH
The StoryGraph
Brailion Ventures Limited
comiXology
comiXology
FictionPress
Storytel Sweden AB
OverDrive, Inc.
Damir Juretic
SC TWODOOR GAMES SRL
GoodNovel
Dreame Media
GoodNovel
Tony Soft
Fable Group
LibraryThing.com
Basmo
Perpustakaan Nasional
PlayMate
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