an introductory logic textbook by P.D. Magnus
link: original website
This work is licensed under a Creative Commons Attribution 4.0 International License.
P.D. Magnus' forallx logic textbook
an introductory logic textbook by P.D. Magnus
link: original website
This work is licensed under a Creative Commons Attribution 4.0 International License.
P.D. Magnus' forallx logic textbook
http://www.fecundity.com/logic/download.html
Creative Commons Attribution 4.0 International