Draw in contour lines at the following elevations (all numbers are given in feet above sea level): 250, 300, 350, 400, 450, 500, 550, 600, 650, 700, 750 350 400 400 300 250 350 350 B 450 500 500 450 450 400 300 550 600 600 550 500 450 350 A 600 650 650 600 550 500 400 650 700 700 650 600 550 450 650 750 700 650 600 550 500 600 650 650 600 550 500 450

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