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<br />DEPARTMENT OF THE INTERIOR. <br /> <br />WILLIAM P. CLARK, Secretary <br /> <br />U.S. GEOLOGICAL SURVEY <br /> <br />Dallas L. Peck, Director <br /> <br />First printing 1967 <br />Second printing 1968 <br />Third printing 1976 <br />Fourth printing 1984 <br /> <br />UNITED STATES GOVERNMENT PRINTING OFFICE, WASHINGTON: 1984 <br /> <br />For sale by the Distribution Branch, U.S. Geological Survey <br />804 South Pickett Street, Alexandria, VA 22304 <br /> <br />e <br /> <br />e <br /> <br />e <br />