R.N. Roy…[et al) <br/><br/>
Plant nutrition for food security:a guide for intergrated nutrient management  

 - FAO  Rome  2006 
<br/><br/><label>ISBN: </label>92 5 105490 8 
<br/><br/><label>LC Class. No.: </label>FAO QK 867   / P543 2006