Original: La Musica Contemporanea. Guillermo Graetzer. La Musica Contemporanea composed by Guillermo Graetzer. 1914-. Book. Spanish.
Oversettelse: The Contemporary Music. The Contemporary Music komponert av Guillermo Graetzer. 1914 -. Bestill. Tekstspråk. Spansk. QM.BA-13207.
