(3dZI GdGdI hGdJLeY ddeYGdL (BZ 80 (3ddeHJOFjf (B/ s - (3GfjS MHdis ([S.N] : (3OGQ GdQGJH GdLGeYjI , s, 1987)
Keywords: (3GdMGSHGJ GdGdcJQhfjIs; (3dZI GdGdI hGdJLejYs