"Duo's, altviolen (2), BR-WFB B:007, C gr.t." . . "120254" . "C-BachWF-GW/3" . . "115518" . . "Duo's, altviolen (2), BR-WFB B:007, C gr.t." . "BACH, WILHELM FRIEDEMANN |f [componist]" . "115518" . "115518 120254 BACH, WILHELM FRIEDEMANN |f [componist] C-BachWF-GW/3 Duo's, altviolen (2), BR-WFB B:007, C gr.t." . . .