Box 606741457
Container
Restricted
Contains 1 Result:
Files 389-396, 1949-57
File
Shelfmark: MS. Marconi 1035
Comprises file numbers:
389: valves, 1949-55
389/2: valve specification, 1952-7
389/4: crystal valves, 1952
396: SSB [single sideband] and crystal filters, 1951-6
Extents: 1 box
Dates:
1949-57