1. Respiratory percussion Author(s): Da Costa, J. M. (Jacob Mendes), 1833-1900 Publication: [Philadelphia? : s.n., 1875?] Subject(s): Diagnostic Techniques, Respiratory SystemPercussion -- methods
2. A new method of controlling the velum palati and enlarging the pharyngo-buccal aperture in rhinoscopic exploration Author(s): Wales, Philip S. (Philip Skinner), 1837-1906 Publication: Washington : Columbian Press, 1877 Subject(s): Nasopharyngeal Diseases -- diagnosisDiagnostic Techniques, Respiratory System