
1847 / Book or monograph
A Code of Signals ... in the Merchant Service
Communication, telegraphy and codes · Navigation, seamanship and maritime practice
271 pages Open documentOpening preserved document…

Bibliographic identity checked against available scan and source evidence.
Digitizing archive catalogue
https://archive.org/details/physicalgeograph01maur
found-clear/the-physical-geography-of-the-sea.pdf
SHA-256: 3e5d4a815ef1088287a87fa219106e717f6702a12742ec886b24c54055fe22e2
Catalogue reviewed 19 September 2026. Original scans retained; catalogue labels do not endorse historical claims.