Russell, R.Scott <br/><br/>
Plant root systems: their function and interaction with the soil  R. Scott Russlle. 

 - London  McGrawHill  1977 
 - xii, 298p., illus. 
 - (European plant biology series). .
<br/><br/><label>ISBN: </label>0-07-084068-7. 
<br/><br/><label>Dewey Class. No.: </label>581.43,  / R98P