The roundel problem: presented at the Ninth Annual Meeting of The Railway Signal Association, held at Niagara Falls, N.Y., October 10-12, 1905
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Bibliographic Details
Main Author: Churchill, William (Author)
Format: Book
Language:English
Published: [Corning, N.Y.] [Verlag nicht ermittelbar] [1905]
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Physical Description:32 Seiten 2 Illustrationen 23 cm

There is no print copy available.

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