Duet from the opera "Der Apotheker und der Doktor" ("The Druggist and the Doctor"), Krebs 292 Duet from the opera "Der Apotheker und der Doktor" ("The Druggist and the Doctor"), Krebs 292 Main opus "Der Apotheker und der Doktor" ("The Druggist and the Doctor"), opera in 3 acts, libretto by Gottlieb Stephanie, Krebs 292