La crisis agricola en el estado de Zacatecas (1970-1990). Causas y perspectivas
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| Format: | Tesis de licenciatura |
| Published: |
MX
1996
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| Online Access: | https://hdl.handle.net/20.500.14330/TES01000243585 http://132.248.9.195/ppt1997/0243585/Index.html |