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\bibitem{Botta1993} Botta, P. (1993). La {\textquotedblleft}Celestina{\textquotedblright} de Palacio en sus aspectos materiales. \textit{Bolet{\'\i}n de la Real Academia Espa{\~n}ola}, 73 (258 \& 259), 25--50 \& 347--66.

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