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Amazon

Apple

Baker & Taylor Blio

Barnes & Noble Nook

Bookmate

Booktopia

EBSCO

FeedBooks Retail

Follett

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Glose

Hummingbird DM

iFlipd

ITSI Education UK

Kobo

Libreka

Libri

LIX

RedShelf (Virdocs)

Rethink Books

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SpoonRead

Vida Global Library

Wook

Zola Books