Columbia subject headings:
Harvard subject headings:
Beer, Stafford.
Maturana, Humberto R., 1928-
Social sciences--South America.
Varese, Stefano.
Varsavsky, Oscar, -1976.
Princeton subject headings:
Beer, Stafford.
Maturana, Humberto R., 1928-
Social sciences--South America.
Varese, Stefano.
Varsavsky, Oscar, -1976.