Set includes various issues of some sheets. Military grid. "Heights in feet, depths in fathoms." Relief shown by contours, form lines, spot heights, and/ or hachures; depths shown by isolines. Contour interval 100 feet. Four classes of roads or trails, and areas of vegetation and cultivation are shown. Marginal diagrams: Index to boundaries.--Coverage diagram.--Index to adjoining sheets. Sheets have individual titles and numbers.
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