Mathematical Proofs: A Transition to Advanced Mathematics
Gary Chartrand & Albert Polimeni & Ping Zhang
The Feynman Lectures on Physics, Vol. I
Richard P. Feynman & Robert B. Leighton & Matthew Sands
The Feynman Lectures on Physics (1)
Graph Theory
Ronald Gould
Elemental
Tim James
The Feynman Lectures on Physics, Vol. III
The Feynman Lectures on Physics, Vol. II