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Duckham, Matt. (). GIS : A Computing Perspective Third Edition . : Taylor & Francis.

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Duckham, Matt. GIS : A Computing Perspective Third Edition. : Taylor & Francis, . Text.

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Duckham, Matt. GIS : A Computing Perspective Third Edition. : Taylor & Francis, . Text.

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Duckham, Matt. GIS : A Computing Perspective Third Edition. : Taylor & Francis, . Print.