Second expert consultation on environmental criteria 
/ FAO 
. - Rome  : FAO, 1981
. - 60 p.  ; 28 cm. 
 - FAO  Plant production and protection paper  28 .
<br/><br/><label>ISBN: </label>9251011311 
<br/><br/><label>Source: </label> Fonds S.600 
<br/><br/><label>Universal Decimal Class. No.: </label>632.95