TY  - BOOK
AU  - El-Hassan,A.M.
TI  - An introduction to the Sudan Economy
T2  - Proceedings of the Ninth National Conference on Clays and Clay Minerals, Lafayette, Indiana, October 5-8, 1960
PY  - 1976///
CY  - Khartoum
PB  - Khartoum University Press
KW  - Conferences - Meetings
ER  -