Stokes, A. <br/><br/>
The Shape of Tree Root Systems Affects Root Wood Strength. 

 - Karlsruhe :  FZKA,  1995. 
 - 53 p. :  il. 
<br/><br/> Bibliografiía: p.45-48 
<br/><br/><label>ISSN: </label>0947-8620 
<br/><br/><label>Standard No.: </label>FZKA-5518