Hitchcock, A.S. <br/><br/>
Manual of the grasses of the United States / 
by A.S. Hitchcock. 
 - 2nd ed.,  /  revised by Agnes Chase. 
 - Washington :  U.S. Govt. Print. Off.,  1950. 
 - 1051 p. :  ill., maps. ;  24 cm. 
 - Miscellaneous publication (United States. Dept. of Agriculture) ;  no. 200. .
<br/><br/> Includes index. 
<br/><br/>Includes bibliographical references. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Grasses--Identification.--United States<br/>Grasses--classification.<br/>Grasses--United States.<br/>Botany--United States.