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Agriculture -- Economic aspects -- Mexico -- Statistics -- 1960-1980. (1) |
Farmers -- Mexico -- Statistics -- 1960-1980. (1) |
Subsistence farming -- Mexico -- Statistics -- 1960-1980. (1) |
Agriculture -- Economic aspects -- Mexico -- Statistics -- 1960-1980. (1) |
Farmers -- Mexico -- Statistics -- 1960-1980. (1) |
Subsistence farming -- Mexico -- Statistics -- 1960-1980. (1) |