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Walking survey
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Walking survey
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Walking survey
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Walking survey
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Bing tracing, foot survey
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Bing tracing, foot survey
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Bing tracing, foot survey
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Bing tracing, local knowledge
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Foot survey
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Bing tracing, local knowledge
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Bing tracing, local knowledge
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Bing tracing, local knowledge
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Bing tracing, local knowledge
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Bing tracing, local knowledge
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Bing tracing, local knowledge
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Local knowledge
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Local knowledge
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Local knowledge
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Bing image trace / local knowledge
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Satellite image trace