1 matching record(s)
file W (Stack)Clifford, C. F.
"Development of the Magnetic Escapement"
photocopy from Horological Journal, April 1962, pp. 214-217.
[1998-131]
1962
1 matching record(s)
file W (Stack)Clifford, C. F.
"Development of the Magnetic Escapement"
photocopy from Horological Journal, April 1962, pp. 214-217.
[1998-131]
1962