Ayuba, Grace <br/><br/>
Biophysical characteractics and landus 
by Ayuba Grace 
 - Zaria :  Dept of ABU ,  2011 
 - xiii,94 leaves: ills. 
<br/><br/>Includes bibiliographical reference 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Geography.
<br/><br/><label>LC Class. No.: </label>GB 561