The principles of sound signalling:
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Bibliographic Details
Main Author: Hart, Morris Daniel (Author)
Format: Book
Language:English
Published: London Constables and company ltd. 1925
Subjects:
Physical Description:4 p. l., 139, [1] p. diagrs. : 23 cm

There is no print copy available.

Interlibrary loan Place Request Caution: Not in THWS collection!