TY  - BOOK
AU  - Irfan Mahmud Ra'ana
TI  - Economic system under 'Umar the Great : a treatise on Muslim economy in early seventh century
SN  - 9694321699
PY  - 1991///
PB  - Sh. Muhammad Ashraf
KW  - Islamic Empire -- Economic conditions
N1  - Includes bibliographical reference (pages 141-143) and index
ER  -