FAO <br/><br/>
Improved use of plant nutrients:a report of the expert consultation on better exploitation of plant nutrients held in Rome, Italy 18-22  April 1977 

 - FAO  Rome  1977 
<br/><br/><label>ISBN: </label>925-5-900706-2 
<br/><br/><label>LC Class. No.: </label>FAO S 631.3  / E85 1977