Laserfiche WebLink
<br />UNITED STATES DEPARTMENT OF THE INTERIOR <br /> <br />ROGERS C. 8, MORTON, Secretary <br /> <br />GEOLOGICAL SURVEY <br /> <br />William T. Pecora, Director <br /> <br />UNITED STATES GOVERNMENT PRINTING OFFICE, WASHINGTON: 1973 <br /> <br />For sale bv the Superintendent of Documents, U.s. Government Printing Office <br />Washington, D.C. 20402 <br />Stock No. 2401-00315 <br />