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Notes on recent determinations of geographical positions in the Libyan desert / by John Ball.
- 916.12 B1871
- Ball, John, 1872-1941.
- Government Press,
- 1919.
- Cairo :
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The geography and geology of west-central Sinai / by John Ball.
- 551.531 B1871
- Ball, John, 1872-1941.
- Govt. Press,
- 1916.
- Cairo :
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A brief note on the phosphate deposits of Egypt / by John Ball ...
- 553.640962 B1871
- Ball, John, 1872-1941.
- Government Press,
- 1913.
- Cairo :