The Displacement Method of Sinus Diagnosis and TreatmentThe Displacement Method of Sinus Diagnosis and Treatment. (A Practical Guide to the Use of Radiopaques in the Nasal Sinuses.) By ProetzArthur W. A.B., M.D., Assistant Professor of Clinical Otolaryngology in the Washington University School of Medicine; Fellow of the American Laryngological Association, the American Laryngological, Rhinological, and Otological Society, the American Academy of Ophthalmology and Otolaryngology, and the American College of Surgeons. Published by Annals Publishing Company, St. Louis, Missouri, 1931. Volume of 242 pages, 145 illustrations, and 1 chart. Price, $6.00.