BULLETIN No. 6. 
U. S. DEPARTMENT OF AGRICULTURE. 
DIVISION OF AGROSTOLOGY. 
[Grass and Forage Plant Investigations.] 
GRASSES AND FORAGE PLANTS 
OF THE 
DAKOTAS. 
BY 
THOMAS A. WILLIAMS. 
PREPARED UNDER THE DIRECTION OF THE AGROSTOLOGIST. 
WASHINGTON: 
GOVERNMENT PRINTING OFFICE, 
E 1897. 
