A study on spelling errors in the secondary and tertiary stages Lamiaa Ahmed Abdelhameed creator Helmi Aboulfetouh Supervisor Mariam Osman Supervisor ua Cairo Lamiaa Ahmed Abdelhameed 1997 eng 100 Leaves : charts ; 30cm Lamiaa Ahmed Abdelhameed ; Supervised Helmi Aboulfetouh , Mariam Osman Thesis(M.A.) - Cairo University - Faculty of Arts - Department of English http://172.23.153.220/th.pdf http://172.23.153.220/th.pdf EG-GiCUC 090914 20250223030047.0 eng