INVITATIONAL EXHIBITIONS
1967 Poitiers, France
1968 Gandawa, Belgium
1968 Este, Italy
1969 Padava, Italy
1969 Milano, Italy
1969 Rome, Italy
1969 Turin, Italy
1969 Caracas, Venezuela
1969 Havana, Cuba
1970 Bourges, Belgium
1970 Berne, Switzerland
1971 Turkey
1971 Iran
1972 Mechelen, Belgium
1971 Abano Terme, Italy
1971 Dusseldorf, Germany
1971 Kiel, Germany
1971 Luebeck, Germany
1972 Regensburg, Germany
1972 Gutersioh, Germany
1972 Munich, Germany
1972 Cologne, Germany
1972 Marburg, Germany
1972 Bonn, Germany
1972 Gottingen, Germany
1972 Oberhausen, Germany
1972 Berlin, Germany
