Helix books

Series by Richard P. Feynman
Unsorted Book Richard P. Feynman, Robert B. Leighton, Matthew Sands: Six easy pieces (1995, Addison-Wesley)

Six easy pieces

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Unsorted Book Richard P. Feynman: Six not-so-easy pieces (1997, Addison-Wesley Pub.)

Six not-so-easy pieces

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Unsorted Book Richard P. Feynman: The pleasure of finding things out (1999, Perseus Books)

The pleasure of finding things out

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