Collins, Charles Dickey, 1872- [from old catalog] · New York, D. Van Nostrand company · leaf 91
the shore line if thesea were to rise or the land to sink twenty feet. On agentle slope this contour is far from the present coast;on a steep slope it is near the coast. Where successive 87 88 DRAFTING ROOM METHODS contour lines are far apart on the map they indicate agentle slope; where they are…
Drawing-room practice · Mechanical drawing
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