(3ehShYI dg GdCSeGA GdMSfi (B: s (3Vejeg Edi CSeGA Gddg GdMSfi (B/ s - (3GdTQHGUj, CMeOs ((3HjQhJ (B:s (3OGQ GdLjd,s, 1987)
Keywords: (3GdbQBf GdcQjes; (3GdaGX GdbQBfs