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W (Stack - oversize)Hope-Jones, Frank
"Electric Horology"
photocopy from The Practical Watch and Clock Maker (latterly The Watch and Clock Maker), in 31 parts from March 15, 1928 (vol. I no. 1) to September 15, 1930; (Copied from original journal in possession of Dr D. J. Boullin, except part I, missing from his set)
[1990-5]
1928-1930