El-Hibir, Babiker Idris <br/><br/>
Sources of common errors in the written English of Sudanese secondary school students 
by Babiker Idris El-Hibir 
 - Cardiff  University of Wales  1976 
 - 401 p. ; 30 cm. 
<br/><br/>Thesis (Ph. D.) - University of Wales, 1976 
<br/><br/>p. 315-321 
<br/><br/><label>Subjects--Topical Terms: </label><br/>English Language--Study and teaching (Secondary)--Sudan--Evaluation<br/>English Language--Study and teaching (Secondary)--Evaluation--Sudanese speakers
<br/><br/><label>Subjects--Geographic Terms: </label><br/>English Language--Rhetoric--Study and teaching--Sudan--Evaluation