Columbia subject headings:
Avicenna, 980-1037.
Avicenna, 980-1037. Shifāʼ.
Islamic philosophy.
Metaphysics.
Harvard subject headings:
Avicenna, 980-1037. Shifāʼ. Ilāhīyāt.
Metaphysics--Early works to 1800
Princeton subject headings:
Avicenna, 980-1037--Contributions in metaphysics.
Avicenna, 980-1037. Shifāʼ.