Columbia subject headings:
Avicenna, 980-1037.
Logic, Medieval.
Peripatetics.
Proposition (Logic)--History.
Propositional logic.
Harvard subject headings:
Avicenna, 980-1037--Contributions in propositional logic.
Logic, Medieval.
Peripatetics.
Proposition (Logic)--History.
Princeton subject headings:
Avicenna, 980-1037.
Logic, Medieval.
Peripatetics.
Proposition (Logic)--History.