Tecnologia agricola e impacto en el paisaje de la region Celaya Guanajuato
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| Format: | Tesis de doctorado |
| Published: |
MX
1995
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| Online Access: | https://hdl.handle.net/20.500.14330/TES01000224863 http://132.248.9.195/ppt1997/0224863/Index.html |