Columbia subject headings:
Agriculture, Prehistoric--Ethiopia.
Agriculture--Ethiopia--Origin.
Ethiopia--Antiquities.
Prehistoric peoples--Food--Ethiopia.
Harvard subject headings:
Agriculture, Prehistoric--Ethiopia.
Agriculture--Ethiopia--Origin.
Ethiopia--Antiquities.
Prehistoric peoples--Food--Ethiopia.
Princeton subject headings:
Agriculture, Prehistoric--Ethiopia.
Agriculture--Ethiopia--Origin.
Ethiopia--Antiquities.
Prehistoric peoples--Food--Ethiopia.