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PUD Distance
Spatial Analysis of distance of photography from rivers and lakes within the Lough Erne catchment. Locations of photography are compared to random points. - 
    
      
PUD_visitor model
Model of recreational visitation compared to Photography User Days (PUD) for Northern Ireland- - 
    
      
Farm Census (administrative geographies)
Northern Ireland Farm Census Data-1999, 2015. Data are presented by ward (agricultural divisions)