1. Hume, W. F., Egypt Surv. Dept., Cairo, 2, PI (1934).
2. Potter, P. E., and Pettijohn, F. J., Paleocurrents and Basin Analysis, (Academic Press, 1963).
3. Akaad, M. K., and El-Ramly, M. F., Geol. Surv., Cairo, Paper 9 (1960).
4. El-Ramly, M. F., and Akaad, M. K., Geol. Surv., Cairo, Paper 8 (1960).
5. Akaad, M. K., and Essawy, M. A., Bull. Sci. Tech., Assiut (in the press).