Nigeria Journal of Soil and Environmental Research  

 - Zaria   Department of Soil Science, 
 - 7, 2007; 11, 2013; 12, 2014; 13, 2015;  
<br/><br/><label>ISSN: </label>1595-6121 
<br/><br/><label>LC Class. No.: </label>SB1  / .N54