[1]
T. Y KHAMRCO, R. J AL-NAIMI, and B. S AL-MUKHTAR, “The effect of social class on periodontal condition and treatment needs of 13-15 year old students in Mosul city - Ninevah : Iraq”, Al-Rafidain Dent J , vol. 1, no. 1, pp. 78–85, Jan. 2001.