(3GdHSjW aj GdbhGYO h GdfUhU GdaGQSjI (B/ s - (3CHh eZdj, eMeO hUajs ((3GdHUQI (B:s (3hRGQI GdJYdje GdYGdj h GdHMK GdYdej,s, 1987)
Keywords: (3GddZI GdaGQSjIs; (3bhGYO GddZIs