1.
Bulletin of the Faculty of Science-University of Alexandria. 1989; 29 (4): 14-22
en Inglés
| IMEMR
| ID: emr-12611
2.
Bulletin of the Faculty of Science-University of Alexandria. 1989; 29 (4): 8-13
en Inglés
| IMEMR
| ID: emr-12614