Agriculture and Environment :  The physical geography of temperate agricultural systems / 
Briggs , David J, Frank M. Courtney . 
 - Harlow :  Longman ,  1993. 
 - xiv,442 p,: 
<br/><br/><label>ISBN: </label>0582004136 
<br/><br/><label>LC Class. No.: </label>S589.7  / .B74  1993