Las invenciones libres de los trabajadores
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| Other Authors: | |
| Format: | Tesis de licenciatura |
| Published: |
México
1998
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| Online Access: | https://hdl.handle.net/20.500.14330/TES01000266161 https://tesiunamdocumentos.dgb.unam.mx/pdbis/266161/Index.html |