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OpenStax: Textbooks
OpenStax offers free textbooks to all types of students, making education accessible and affordable for everyone.
You will find books on the topics:- bookkeeping;
- economy;
- management and marketing;
- nursing;
- Sciences;
- human Sciences;
- math; …
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Toporopa: Topography of Europe
Toporopa is intended for anyone who wants to get to know the topography of Europe better. Various things can be practiced here: Euro countries, rivers, mountain ranges, monarchies, seas, metropolises, islands, capitals, volcanoes, flags, ports, …
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Website (19)Teacher