Problematica de la produccion lactea, en explotaciones ejidales en el municipio de Calpulalpan, Tlaxcala
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| Format: | Tesis de licenciatura |
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MX
1986
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| Online Access: | https://hdl.handle.net/20.500.14330/TES01000030522 http://132.248.9.195/pmig2019/0030522/Index.html |