a Abdullahi, Sani Maikano <br/><br/>
\a Effects of Visual Instructional Materials on Students' Performance in Agricultural Science of Senior Secondary Schools in Taraba State, Nigeria.  \h [Text] 
\c by Sani Maikano Abdullahi 
 - \a Zaria :  \b Dept.of Educational Foundation and Curriculum, A.B.U.  \c 2019 
 - \a x,151leaves.:  \b ill. 
<br/><br/>\a Faculty of Education 
<br/><br/>\a Includes bibliographical references 
<br/><br/><label>LC Class. No.: </label>\a S 531 Abd  / \b 504691