Ra'ana, Irfan Mahmud <br/><br/>
Economic system under Umar the great  a treatise on muslim economy in early seventh century 
by Irfan Mahmud Ra'ana. 
 - 2nd ed.. 
 - Pakistan  Sh. Muhammad Ashraf  1977 
 - xxiv, 165p. 
<br/><br/> Bibliography p. 155-57. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Economics - Religious aspects - Islam<br/>The second caliph of Islam (Umar) - ;Biography.
<br/><br/><label>Dewey Class. No.: </label>330.91767  / R11E