The Stethophone, Bell Telephone Laboratories, monograph reprint B-105-1, January 1925. H. F. Dodge.

The Stethophone, Bell Telephone Laboratories, monograph reprint B-105-1, January 1925.

Bell Telephone Laboratories, NY, orig. published in Electrical Communication, October 1924; 12 pages, references, diagrams, photographs.

Condition: Very Good, original light-blue paper wraps, three-hole-punched along margin as issued; toning and sunning to extremities, faded ink notation along top of front cover noting, instruments and measuremens; stapled wraps, binding tight, pages clean and unmarked, 7x9.

Price: $15.00

Item Description

A brief description of a new electrical stethoscope adapted for use in teaching and diagnosis of heart and chest sounds.