රාවෝ , බී. වී. <br/><br/>
ලෝක ඉතිහාසය 

 - Department of Education Publications ,  Battaramulla :  2020 
 - viii , 364 p :  ill.  24 cm , 
<br/><br/><label>ISBN: </label>9789552505454 
<br/><br/><label>Nat. Bib. Agency Control No.: </label>909 RAV 
<br/><br/><label>Subjects--Topical Terms: </label><br/>World History
<br/><br/><label>Dewey Class. No.: </label>909   / RAV