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A study of the methods of block and interlocking signalling / by N.D. Maddock

Author: Maddock, N. D.
Published: 1910.
Physical Description: 31 leaves
Additional Creators: Walker, Elton D. (Elton David)

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Academic theses

Dissertation Note

B.S. Pennsylvania State University, 1910.

Note

Thesis advisor: Elton D. Walker.

View MARC record | catkey: 43332869