- UK Dark Wolf360
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- Noble Heroic Member
Assuming this can be non-fictional too:
Feynman's Lectures on Physics were (and still are) some of the greatest physics books published - they cover a wide array of physics topics to a fairly advanced level, providing one with a solid foundation to the basis of physics as a whole.
Also, Spivak's text on calculus is a truly brilliant book covering, nearly, all areas of calculus with clear details and explanations.