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Gutenberg
IFixit
Mooc
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6 book(s)
Stack Overflow
Q&A for professional and enthusiast programmers
eng
stack_exchange
iFixit in English
iFixit is a global community of people helping each other repair things. Let's …
eng
iFixit
Wikipedia
The free encyclopedia
eng
wikipedia
Project Gutenberg Library - Books in English
The first producer of Free Ebooks
eng
gutenberg
Core English 1
A unique and free course to improve your life skills.
eng
openedx
PhET Interactive Simulations
Interactive simulations for Science and Math
eng