The training of technicians in the Ordnance Survey; paper no. C.2
Seymour, William Arthur
The training of technicians in the Ordnance Survey; paper no. C.2
In: RICS. Land Surveyors Conference, April, 1970. 1970/19A
526.907
The training of technicians in the Ordnance Survey; paper no. C.2
In: RICS. Land Surveyors Conference, April, 1970. 1970/19A
526.907