Ibia, Trenchard Okon, <br/><br/>
(teaching, research and extension guide) / Guide to fertilizer use for crops in Akwa Ibom State, Nigeria : 

 - Lagos  Sibm books  2009 
<br/><br/><label>ISBN: </label>978801268X 
<br/><br/><label>LC Class. No.: </label>S638.7.I24 2009