The modern service of commercial and railway telegraphy
Subtitle: in theory and practice, including the railway station and express service, arranged in questions and answers.
Edition: 7th ed., rev. and enl. Comp. and prepared by J. P. Abernethy.
Publisher: The author
Published: 1891
Place of publication: Cleveland, O
Language: eng
Number of pages: 424
Subjects: Telegraph -- Operators' manuals
Notes: 1st edition pub. under title: An outline of commercial and railway telegraphy, in theory and practice. 1882.