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<br />001874 <br /> <br />UNITED STATES DEPARTMENT OF THE INTERIOR <br /> <br />JAMES G. WATT, Secretary <br /> <br />GEOLOGICAL SURVEY <br /> <br />Dallas L. Peck, Director <br /> <br />For additional information <br />write to: <br /> <br />For sale by: <br /> <br />Colorado District Chief <br />U.S. Geological Survey <br />Box 25046, MS 415 <br />Denver Federal Center <br />Lakewood, CO 80225 <br /> <br />Open-File Services Section <br />Western Distribution Branch <br />U.S. Geological Survey <br />Box 25425, MS 306 <br />Denver Federal Center <br />Lakewood, CO 80225 <br />(Telephone: [303] 234-5888) <br /> <br />~i'I.-.:" <br />, - <br /> <br />'.; <br /> <br />.,' . <br />:.\:.;"1' <br /> <br /> <br /> <br /> <br /> <br /> <br />~~~~ <br /> <br />::'.,:"; <br /> <br />;~ <br />~z <br />~ <br />~~r: <br />~:;}~ <br />~~'\ <br />.:"..g:i <br /> <br /> <br />I <br />.t~~~t <br />1~j <br />~~ <br /> <br />1!/~~ <br />~~t <br />~/ft: <br /> <br /> <br />I <br /> <br />rH:; <br /> <br />(~1 <br /> <br />:;:~~:.~ <br />;..;?:: <br />...... <br /> <br />"':~-.-. <br /> <br />t',", <br />',;,: <br /> <br />'<- <br /> <br />:,:>. <br /> <br />~" '-;. <br />\~;...'::.:~ <br /> <br />, '" <br />,- . <br /> <br />1. <br />