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DEPARTMENT OF THE INTERIOR, 
WF ' 
_ U. 8. GEOLOGICAL AND GEOGRAPHICAL SURVEY OF THE TERRITORIES. 
F. V. HAYDEN, U. 8S. GEOLOGIST-IN-CHARGE. 
MISCELLANEOUS PUBLICATIONS—No. 4. 
See PSTD 
OF THE 
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FLORA OF COLORADO. 
LHOMAS CC. PORTE 
IGEN M. COULTER. 
WASHINGTON: 
_ GOVERNMENT PRINTING OFFIOE,. 
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