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Department of Scientific and Industrial Research: Report for the year 1929-30   Publication: UK H. M. Stationery Office 1931 Description: 224 pages , 25 cm. Date: 1931 Availability: Items available: (1)

Handbook for Wireless Operators Working Installations Licensed by Her Majesty's Postmaster General   Publication: UK H. M. Stationery Office 1938 Description: 112 pages , 22 cm. Date: 1938 Availability: Items available: (1)