Free to read

Niklaus Wirth

2 free books by Niklaus Wirth.

Algorithms and Data Structures (Oberon Version)
1985 / rev. August 2004 · 2004 · Read at people.inf.ethz.ch ↗
Compiler Construction
Revised edition, 2013 (orig. 1996) · 2013 · Read at people.inf.ethz.ch ↗