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Bitmap Image  |  1999-09-22  |  169.3 KB  |  596x289  |  8-bit (49 colors)
   ocr: When the ground slopes gently, with no streams or other distinguishable feature to guide you, it can UPHILL T sometimes be difficult to tell which is the uphill side of a contour line. In this case it is useful to know 250 that the figures on a contour line are always printed with the top of the number facing uphill.