Citations
Ordnance Survey policy statement no 7. Re-triangulation: density of minor trig., 1958-05, GBR/3296/Maps/CCSA.OS_189_1/7/3, OS_189_1/7/3. Cambridge University Library. |
|
Ordnance Survey policy statement no 7. Re-triangulation: density of minor trig., 1958-05, GBR/3296/Maps/CCSA.OS_189_1/7/3, OS_189_1/7/3. Cambridge University Library. https://archivesearch.lib.cam.ac.uk/repositories/2/archival_objects/243552 Accessed November 18, 2024. |