Book IV. Duets up to the third position, by Ignaz Lachner,
Alard, and Hering. (11804 s).
Book IVA. Duets up to the third position, by C. Gurlitt. Ignaz Lachner, and Viotti. (11804 a).
Alard, and Hering. (11804 s).
Book IVA. Duets up to the third position, by C. Gurlitt. Ignaz Lachner, and Viotti. (11804 a).