(3GdHQeLI GdgjcdjI HdZI ahQJQGf (B77 (3ddgfOSI hGdYdhe (B/ s - (3GjJQf, OhdhQjSs; (3MSf GdYRI(B((3eQGLY(B)s; (3SGei SQMGf (B((3eJQLe(B)s ([S.N] : (3TQcI HfjGejf cefLQ , s, 1991)
Keywords: (3GdgfOSIs; (3GdYdhes; (3ahQJQGfs