4 ms·
I am surprised nobody has mentioned this one. It is free and available online: https://softwarefoundations.cis.upenn.edu/ https://softwarefoundations.cis.upenn
by deterministic 4y ago
I am surprised nobody has mentioned this one. It is free and available online:
https://softwarefoundations.cis.upenn.edu/ https://softwarefoundations.cis.upenn.edu/