Plant roots and their environment : proceedings 
edited by Bobbie L.  McMichael and Hans Persoul   
 - Amsterdam  Elsevier  1991 
 - xi, 649p. : ill., tables ; 25cm.- 
 - Developments in agricultural and managed-forest ecology ; no.24 .
<br/><br/><label>ISBN: </label>0444891048 
<br/><br/><label>Dewey Class. No.: </label>581.5  / McM