Physical Principles governing the Design of Sound Signalling Apparatus of large output for use in Air and Water as an Aid to Navigation when visibility is bad by H. Hecht, Kiel
- Reference No:
- C DPD/1/3/12/5/15
- Dates:
- 8 May 1929
- Description:
- Format:
- Archive Item
- Extent:
- 1 item
- Language:
- Access Conditions:
- Access will be granted to any accredited reader
- Repository:
- Hull City Archives
- Collection:
- Records of Humber Conservancy and the Humber Ports (Records deposited by Associated British Ports and its Predecessors)