Relay engineering
Subtitle: a reference book to guide engineers and others in the selection and use of electromagnetic relays
By: by Charles A. Packard.
Contributors: Struthers-Dunn, Inc.,  Philadelphia.
Edition: 2d ed.
Publisher: Struthers-Dunn
Published: 1945
Place of publication: Philadelphia
Language: eng
Number of pages: 640
Subjects: Electric relays.