Estudios edafologicos de suelos derivados de cenizas volcanicas del Popocatepetl, Edo. de Puebla
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| Format: | Tesis de licenciatura |
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MX
1970
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| Online Access: | https://hdl.handle.net/20.500.14330/TES01000059195 http://132.248.9.195/pmig2020/0059195/Index.html |