Aportaciones a la bioestratigrafia, basada en fauna de ammonites de la secuencia del Jurisaco superior (Kimmeridgiano-Tithoniano) del area de Mazapil, Zacatecas, Mexico
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| Format: | Tesis de doctorado |
| Language: | Español |
| Published: |
1991
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| Online Access: | https://hdl.handle.net/20.500.14330/TES01000169633 http://132.248.9.195/ppt1997/0169633/Index.html |