Alternative agriculture 
/ Committee on the role of Alternative Farming methods in modern production Agriculture; board on Agriculture, national research council 
. - Washington  : National Academy press, 1989
. - XIV-448 p.  : ill.,couv.ill.en coul.  ; 26 cm. 
<br/><br/>index 
<br/><br/><label>ISBN: </label>0309039851 
<br/><br/><label>Source: </label> Fonds s.600 
<br/><br/><label>Universal Decimal Class. No.: </label>631.153.