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Betancor Martín, Carlos Salvador Advisor: Montiel Nelson, Juan Antonio ; Vega Martínez, Aurelio Issued date: 2015 Tesis doctoral
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Advisor: Vega Martínez, Aurelio ; Núñez Ordóñez, Antonio Issued date: 2015 Tesis doctoral
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Oquelis Cabredo, Justo Ernesto Advisor: Vega Martínez, Aurelio Issued date: 1997 Tesis doctoral
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Advisor: Núñez Ordóñez, Antonio Issued date: 1992 Tesis doctoral
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