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(by Steven H. Simon): Recommended for those who find the canonical texts (like Kittel or Ashcroft/Mermin) too dense. It covers essential topics like phonons and band structure in a "friendlier" manner. University of Cambridge Where to Find Verified Versions [Insert link to downloadable PDF guide] (by Steven H
Help you find from reputable universities like MIT or Oxford. [Insert link to downloadable PDF guide] (by Steven H
The smallest repeating unit that displays the full symmetry of the crystal. [Insert link to downloadable PDF guide] (by Steven H