You might like Left Right no title Hansjörg Mayer 1965 no title Hansjörg Mayer 1965 no title Hansjörg Mayer 1965 no title Hansjörg Mayer 1965 no title Hansjörg Mayer 1965 no title Hansjörg Mayer 1965 a Hansjörg Mayer 1976 b Hansjörg Mayer 1976 alphabet square Hansjörg Mayer 1964 alphabet square Hansjörg Mayer 1964 alphabet square Hansjörg Mayer 1967 alphabet square Hansjörg Mayer 1967