digital book
appmemobitech
DigiKhata - 理财 和 记账簿
DigiKhata Business Apps
冰雪奇緣AR遊戲書APP
Welbeck Publishing Limited
Digitales Schulheft
Robert Stöhr
Digital Quiz Book
Apex learning app
Digital-PLRA
Punjab Land Records Authority
Google Play 圖書 - 電子書和漫畫
Google LLC
Libby,由 OverDrive 出品
OverDrive, Inc.