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- Great Britain. Ordnance Survey11
- Geological Survey (U.S.)10
- Project Muse9
- Harley, J. B. (John Brian)7
- ebrary, Inc7
- Library of Congress6
- Valerio, Vladimiro6
- Geological Survey (U.S.), issuing body5
- Lorenzo Capone editore5
- Bosse, David C.4
- Brückner, Martin, 1963-4
- Carlone, G. (Giuseppe)4
- De Seta, Cesare, 1941-4
- Harrisse, Henry, 1829-19104
- Kamāl, Yūsuf4
- National Cartographic Information Center4
- Oliver, Richard R.4
- Plihál, Katalin4
- Rebert, Paula, 1948-4
- Smith, David (David A.)4