| Identifer | oai:union.ndltd.org:DITED/urn:dited:bn:29278 |
| Date | January 1999 |
| Creators | Costa, Maria José Laranjeiro Pita da |
| Contributors | Ferreira, Maria Manuela Malheiro |
| Publisher | Instituições portuguesas -- -Universidade Aberta |
| Source Sets | National Library of Portugal DiTeD ETD Repository |
| Language | Portuguese |
| Detected Language | Portuguese |
| Type | mastersthesis |
| Source | Porto |
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