The 1931 international code of signals, vol. 2.
| Awdur Corfforaethol: | |
|---|---|
| Awduron Eraill: | |
| Fformat: | Llyfr |
| Iaith: | English |
| Cyhoeddwyd: |
Washington
United States Govt. Printing Office
1933.
|
| Rhifyn: | American ed. |
| Cyfres: | U. S. Hydrographic Office. Publication no. 87-88.
|
| Pynciau: |