Browse All
1858 Plate XVIII: General diagram … Survey Book (General diagram of the tria … |
1858 Plate XIX: Principal Triangu … Survey Book Principal Triangulation. Pla … |
1857 Index to the Ordnance Survey … Survey Book Index to the Ordnance Survey … |
1857 Co. Donegal : Specimen with … Survey Book Co. Donegal : Specimen with … |