(3GdeHGOF GdCSGSjg dJYdje GdSHGMI (B/ s - (3GdYjGT, ajUds; (3GdOjQj, Ydjs; (3GdQHVj, gGfjs ((3EQHO (B:s (3OGQ GdCed ddfTQ h GdJhRjY,s, 1987)
Keywords: (3GdSHGMIs; (3GdQjGVI GdeGFjIs