Columbia subject headings:
Harvard subject headings:
Agriculture, Prehistoric--Mexico--Congresses.
Agriculture, Prehistoric--Southwest, New--Congresses.
Irrigation farming--Southwest, New--Congresses.
Pueblo Indians--Agriculture--Congresses.
Southwest, New--Antiquities--Congresses.
Traditional farming--Southwest, New--Congresses.
Princeton subject headings:
Agriculture, Prehistoric--Mexico--Congresses.
Agriculture, Prehistoric--Southwest, New--Congresses.
Irrigation farming--Southwest, New--Congresses.
Pueblo Indians--Agriculture--Congresses.
Southwest, New--Antiquities--Congresses.
Traditional farming--Southwest, New--Congresses.