Effects of lorry control covering a rural area of Hertfordshire
| Príomhchruthaitheoir: | |
|---|---|
| Údar corparáideach: | |
| Rannpháirtithe: | |
| Formáid: | LEABHAR | 
| Teanga: | English | 
| Foilsithe / Cruthaithe: | Crowthorne, Berkshire
          Transport and Road Research Laboratory
    
        1981. | 
| Ábhair: |