Mostain Billah,Quazi.  x <br/><br/>
Some needed changes in tutorials.  x 

 - x 
 - Exeter,  tuthors,  1979 
 - 55p. 
<br/><br/>
<br/><br/><label>ISBN: </label>x 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Teaching, Study,Method Of. 
<br/><br/><label>Dewey Class. No.: </label>REF 378.17/MOS