EBookDroid - PDF & DJVU Reader - Apps on Google Play
EBookDroid EBook Reader — The PDF & DJVU Reader For Android System | by PubGen | Medium
EBookDroid - PDF & DJVU Reader - Apps on Google Play
Free Ebook Download | Thriveworks
12 places to find the best free e-books for thrifty bookworms | Mashable
GitHub - koreader/koreader: An ebook reader application supporting PDF, DjVu, EPUB, FB2 and many more formats, running on Cervantes, Kindle, Kobo, PocketBook and Android devices