Columbia subject headings:
Forests and forestry, Cooperative--Mexico--Sierra Madre Occidental.
Forests and forestry--Mexico--Sierra Madre Occidental.
Indians of Mexico--Economic conditions.
Land tenure--Mexico--Sierra Madre Occidental.
Tarahumara Indians--Economic conditions.
Harvard subject headings:
Forests and forestry, Cooperative--Mexico--Sierra Madre Occidental.
Forests and forestry--Mexico--Sierra Madre Occidental.
Indians of Mexico--Economic conditions
Land tenure--Mexico--Sierra Madre Occidental.
Tarahumara Indians--Economic conditions.
Princeton subject headings:
Forests and forestry, Cooperative--Mexico--Sierra Madre Occidental.
Forests and forestry--Mexico--Sierra Madre Occidental.
Indians of Mexico--Economic conditions.
Land tenure--Mexico--Sierra Madre Occidental.
Tarahumara Indians--Economic conditions.