(3GNQ GdWjhQ GdShOGA (B((3bUU bUjQI(B) / s - (3GHQGgje YRhRs ([S.N] : (3dLfI GdGYdGe hGdOQGSGJ GdeSJbHdjI , s, 1983)
Keywords: (3GdGOH GdYQHis; (3GdbUU GdbUjQIs; (3GdbUI GdYQHjIs