A treatise on telegraphy
By: prepared for students of the International Correspondence Schools, Scranton, Pa
Publisher: The Colliery Engineer Co.
Published: 1901
Place of publication: Scranton
Language: eng
Subjects: Telegraph
Table of contents: title: v. 1. Arithmetic, mensuration, elementary algebra and trigonometric functions, elementary mechanics, principles of electricity and magnetism, electrical measurments, batteries.; title: v. 2. Elements of telegraph operating, telegraphy.; title: v. 3. Tables and formulas.; title: v. 4. Answers to questions.