Diagrams (Lantern Slides) of Patients in Whom the Inter-Frontal Sinus Septum Has Been Deliberately Broken down by the Nasal Route so as to Ensure More Complete Lavage for Double Frontal Sinus Suppuration

Diagrams (Lantern Slides) of Patients in Whom the Inter-Frontal Sinus Septum Has Been Deliberately Broken down by the Nasal Route so as to Ensure More Complete Lavage for Double Frontal Sinus Suppuration