XIII international grassland congress/ 
edited by E. Wojahn & H. Thons 
 - Berlin  Akademic-Verlag  1980 
 - 1590p. :ill.  hbk 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Grasses
<br/><br/><label>LC Class. No.: </label>SB197.I5 1980