Harding, T. Swann  1890. <br/><br/>
Two blades of grass,  a history of scientific development in the U.S. Department of agriculture, 
by T. Swann Harding. 
 - Norman,  University of Oklahoma Press,  1947. 
 - xv, 352 p.  plates, ports.  22 cm. 
<br/><br/> "First edition." 
<br/><br/><label>LCCN: </label>agr47000159  
<br/><br/><label>Subjects--Corporate Names: </label><br/>United States. Department of Agriculture. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Agriculture--Research.<br/>Scientists--United States.
<br/><br/><label>LC Class. No.: </label>S21.C9  / H3 
<br/><br/><label>Dewey Class. No.: </label>630.72