Afonso Suárez, María Dolores ; Guerra Artal, Cayetano ; Hernández Tejera, Francisco Mario ; Lorenzo Navarro, José Javier Issued date: 2009 Source: 7th International JTEFS/BBCC Conference Sustainable Development. Culture. Education. 2009 Daugavpils University. Daugavpils (Latvia) 5-8 Mayo 2009 Actas de congresos
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