Details of the classical and long-term experiments ...
        Sábháilte in:
      
    
                  | Údar corparáideach: | |
|---|---|
| Formáid: | IRIS | 
| Teanga: | English | 
| Foilsithe / Cruthaithe: | 
      Harpenden, Herts. :
        
      Lawes Agricultural Trust.    
    
     | 
| Ábhair: | 
| Cur síos ar an mír: | Description based on: 1968-73. | 
|---|---|
| Cur síos fisiciúil: | v. : ill. ; 25 cm. |