Completion of Nether ...
The Netherlands. 1962
Completion of Nether ...
The Netherlands. 1962
Completion of Nether ...
The Netherlands. 1962
Resistance
The Netherlands. 1965
Resistance
The Netherlands. 1965
Resistance
The Netherlands. 1965
Child Welfare
The Netherlands. 1966
Child Welfare
The Netherlands. 1966
Child Welfare
The Netherlands. 1966
Child Welfare
The Netherlands. 1966
Child Welfare
The Netherlands. 1966
25th Anniversary of ...
Belgium. 1969
25th Anniversary of ...
Luxembourg. 1969
25th Anniversary of ...
The Netherlands. 1969
25th Anniversary of ...
The Netherlands. 1970
Nature and Environme ...
The Netherlands. 1974
Nature and Environme ...
The Netherlands. 1974
Nature and Environme ...
The Netherlands. 1974
Radiation of Heat an ...
The Netherlands. 1977
First Direct Electio ...
The Netherlands. 1979
Seventieth Birthday ...
The Netherlands. 1979
350th Anniversary of ...
The Netherlands. 1982
Death Centenary of V ...
The Netherlands. 1990
Death Centenary of V ...
The Netherlands. 1990