Relief shown by contours, spot heights, and hachures; depths shown by isolines and soundings. "Contour interval 20 meters ... Depths in fathoms." Six classes of roads, 3 classes of railroads, and vineyard and wooded areas are shown. "Glossary" on each sheet. Marginal maps: Index to adjoining sheets -- Index to boundaries -- Coverage diagram. Interfiled with G.S.G.S Series 4145. Refer to new editions (c.1) for complete set. Index sheet available. Maps Library copy includes locally produced index map on sheet 28 x 22 cm.