Wojahn, E. <br/><br/>
Xiii-xiv International grassland Congress 
E.Wojahn; H. Thons 
 - 1st 
 - Berlin  AKademie-Verlog  1977 
 - Lxiii;665p.;  Hbk 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Grassland--Nature conservation
<br/><br/><label>LC Class. No.: </label>GB578.I2.I6 1977