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1.	Image from Google Jackets	Air survey: the adjustment of minor control plots by War Office. Survey Directorate. GHQ Middle East Series: Technical Pamphlet ; 6Language: English Publication details: Cairo 1943 Availability: Items available for loan: London (1)Collection, call number: SHELF 183.
2.	Image from Google Jackets	The stereocomparator Part II Planimetric control by Thompson, Major E.H War Office. Survey Directorate. GHQ Middle East Series: Technical Pamphlet ; 10Language: English Publication details: Cairo 1943 Availability: Items available for loan: London (1)Collection, call number: SHELF 183.
3.	Image from Google Jackets	The stereo comparator. Part 1 Description and adjustment by War Office. Survey Directorate. GHQ Middle East Series: Technical Pamphlet ; 10Language: English Publication details: Cairo 1942 Availability: Items available for loan: London (1)Collection, call number: SHELF 183.
4.	Image from Google Jackets	Air survey: tilt correction to height measurements by War Office. Survey Directorate. GHQ Middle East Series: Technical Pamphlet ; 4Language: English Publication details: Cairo 1941 Availability: Items available for loan: London (1)Collection, call number: SHELF 183.

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