Contours (2012)
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资源简介：
Half-metre contour elevation lines for the City of Waterloo. This dataset is updated in conjunction with the aquisition of our aerial imagery and is updated on a 2-year cycle. The last update of this information occurred in late 2012 and will be revisited again late 2014 or early 2015.
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City of Waterloo创建时间：
2015-09-17
