2 matching record(s)

file W (Stack)Marrison, W. A.

The Crystal Clock

Bell Telephone System Technical Publications, Monograph B-505. August 1930.

[1972-228]

1930

file W (Stack)Marrison, W. A.

"The First Electric Clock"

offprint from Proceedings of the Engineering Society, vol. 29, 1940. Queens University, Kingston, Ontario, Canada.

[1972-230]

1940