Within Spain his most popular works are the earlier works : the Episodios nacionales ( 46 volumes ) . Outside Spain his Novelas espaÃ olas contemporÃ neas are more popular . In Spain , his most popular works are the early Episodios nacionales ( 46 volumes ) and Fortunata y Jacinta , while outside Spain his Novelas espaÃ olas contemporÃ neas are better known .