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THE ICO BUREAU, 1947-2002
1947-1950
| T. Smith | Great Britain | President |
| A. Arnulf | France | Treasurer |
| P. Fleury | France | Secretary |
| J. Hrdlicka | Czechoslovakia | Vice-President |
| S. S. Ballard | U.S.A. | Vice-President |
| A. C. S. van Heel | The Netherlands | Vice-President |
1950-1953
| A. C. S. van Heel | The Netherlands | President |
| A. Arnulf | France | Treasurer |
| P. Fleury | France | Secretary |
| S. S. Ballard | U.S.A. | Vice-President |
| L. C. Martin | Great Britain | Vice-President |
| J. M. Otero | Spain | Vice President |
1953-1956
| A. C. S. van Heel | The Netherlands | President |
| A. Arnulf | France | Treasurer |
| W. D. Wright | Great Britain | Secretary |
| S. S. Ballard | U.S.A. | Vice-President |
| E. Ingelstam | Sweden | Vice-President |
| J. M. Otero | Spain | Vice-President |
1956-1959
| S. S. Ballard | U.S.A. | President |
| W. D. Wright | Great Britain | Secretary-Treasurer |
| E. Ingelstam | Sweden | Vice-President |
| G. Hansen | Germany | Vice-President |
| A. Maréchal | France | Vice-President |
| G. Toraldo di Francia | Italy | Vice-President |
1959-1962
| E. Ingelstam | Sweden | President |
| W. D. Wright | Great Britain | Secretary-Treasurer |
| J. G. Baker | U.S.A. | Vice-President |
| A. Maréchal | France | Vice-President |
| P. Mollet | Belgium | Vice-President |
| G. Toraldo di Francia | Italy | Vice-President |
1962-1965 (Postponed to 1966)
| A. Maréchal | France | President |
| W. D. Wright | Great Britain | Secretary-Treasurer |
| G. Cario | Germany | Vice-President |
| W. L. Hyde | U.S.A. | Vice-President |
| H. Kubota | Japan | Vice-President |
| P. Mollet | Belgium | Vice-President |
1966-1969
| G. Toraldo di Francia | Italy | President |
| W. L. Hyde | USA | Secretary-Treasurer |
| L. E. Howlett | Canada | Vice-President |
| H. H. Hopkins | Great Britain | Vice-President |
| H. Kubota | Japan | Vice-President |
| T. Skalinski | Poland | Vice President |
1969-1972
| H. H. Hopkins | Great Britain | President |
| J.-Ch. Viénot | France | Secretary Gen & Treasurer |
| B. Havelka | Czechoslovakia | Vice-President |
| R. M. Scott | U.S.A. | Vice-President |
| K. Kinosita | Japan | Vice-President |
| W. H. Steel | Australia | Vice-President |
1972-1975
| W. H. Steel | Australia | President |
| J.-Ch. Viénot | France | Secretary Gen. &Treasurer |
| K. M. Baird | Canada | Vice President |
| B. Billings | U.S.A. | Vice President |
| A. Fiorentini | Italy | Vice President |
| B. Havelka | Czechoslovakia | Vice-President |
| K. Kinosita | Japan | Vice-President |
| H. Koehler | Germany | Vice-President |
1975-1978
| K. M. Baird | Canada | President |
| W. H. Steel | Australia | Past President |
| J.-Ch. Viénot | France | Secretary General |
| F. D. Smith | U.S.A. | Vice President & Treasurer |
| B. Karczewski | Poland | Vice President |
| A. W. Lohmann | Germany | Vice President |
| L. Plaza | Spain | Vice President |
| J. Tsujiuchi | Japan | Vice President |
| W. T. Welford | Great Britain | Vice President |
1978-1981
| A. W. Lohmann | FRG | President |
| K. M. Baird | Canada | Past-President |
| H. J. Frankena | The Netherlands | Secretary-General |
| F. D. Smith | USA | Treasurer & Vice-President |
| E. Marom | Israel | Vice-President |
| K. Schindl | Austria | Vice-President |
| T. Skalinski | Poland | Vice-President |
| J. Tsujiuchi | Japan | Vice-President |
| W. T. Welford | Great Britain | Vice-President |
1981-1984
| J. Tsujiuchi | Japan | President |
| A. W. Lohmann | FRG | Past-President |
| H. J. Frankena | The Netherlands | Secretary-General |
| J. N. Howard | USA | Vice President & Treasurer |
| F. T. Arecchi | Italy | Vice President |
| K. Biedermann | Sweden | Vice President |
| S. Lowenthal | France | Vice President |
| T. Skalinski | Poland | Vice President |
| P. Varga | Hungary | Vice President |
1984-1987
| S. Lowenthal | France | President |
| J. Tsujiuchi | Japan | Past-President |
| H. J. Frankena | The Netherlands | Secretary-General |
| J. N. Howard | USA | Treasurer |
| H. H. Arsenault | Canada | Vice-President |
| K. Biedermann | Sweden | Vice-President |
| E. Byckling | Finland | Vice-President |
| J. W. Goodman | USA | Vice-President |
| P. Hariharan | Australia | Vice-President |
| M. P. Petrov | USSR | Vice-President |
1987-1990
| J. W. Goodman | USA | President |
| S. Lowenthal | France | Past-President |
| J. C. Dainty | Great Britain | Secretary-General |
| P. Hariharan | Australia | Treasurer |
| H. H. Arsenault | Canada | Vice-President |
| M-W Chang | O.E. Soc. Taipei | Vice President |
| A. Consortini | Italy | Vice-President |
| F. Lanzl | FRG | Vice-President |
| D. Malacara | Mexico | Vice-President |
| J. Perina | Czechoslovakia | Vice-President |
1990-1993
| J. C. Dainty | Great Britain | President |
| J. W. Goodman | USA | Past-President |
| P. Chavel | France | Secretary-General |
| P. Hariharan | Australia | Treasurer |
| T. Asakura | Japan | Vice-President |
| A. Consortini | Italy | Vice-President |
| F. Lanzl | FRG | Vice-President |
| G. Lupkovics | Hungary | Vice-President |
| K. Rebane | former USSR | Vice-President |
| G. Sincerbox | USA | Vice-President |
| C.H.F. Velzel | The Netherlands | Vice-President |
| M.J. Yzuel | Spain | Vice-President |
1993-1996
| A. Consortini | Italy | President |
| J.C. Dainty | Great Britain | Past-President |
| P. Chavel | France | Secretary-General |
| R.R. Shannon | USA | Treasurer |
| T. Asakura | Japan | Vice-President |
| K. Chalasinska-Macukov | Poland | Vice-President |
| S.S. Lee | Korea | Vice-President |
| F. Merkle | FRG | Vice-President |
| G.G. Mu | Chinese Opt. Soc. | Vice-President |
| G. Sincerbox | USA | Vice-President |
| C.H.F. Velzel | The Netherlands | Vice-President |
| M.J. Yzuel | Spain | Vice-President |
1996-1999
| T. Asakura | Japan | President |
| A.Consortini | Italy | Past-President |
| P. Chavel | France | Secretary-General |
| A.T. Friberg | Finland | Associate Secretary |
| R.R. Shannon | U.S.A | Treasurer |
| K. Chalasinska-Macukov | Poland | Vice-President |
| R. Dândikler | Switzerland | Vice-President |
| A.H. Guenther | U.S.A | Vice-President |
| M.C. Hutley | U.K. | Vice-President |
| S.S. Lee | Korea (Reublic of) | Vice-President |
| F. Merkle | Germany | Vice-President |
| G.G. Mu | Chinese Opt. Soc. | Vice-President |
| J. Ojeda-Castañeda | Mexico | Vice-President |
1999-2002
| A.H. Guenther | U.S.A. | President |
| T. Asakura | Japan | Past-President |
| P. Chavel | France | Secretary-General |
| A.T. Friberg | Finland | Associate Secretary |
| G.T. Sincerbox | U.S.A | Treasurer |
| H.H. Arsenault | Canada | Vice-President |
| M.L. Calvo-Padilla | Spain | Vice-President |
| R. Dändikler | Switzerland | Vice-President |
| A.A. Friesem | Israel | Vice-President |
| U. Kim | Korea (Reublic of) | Vice-President |
| D.A.B. Miller | U.S.A. | Vice-President |
| J. Ojeda-Castañeda | Mexico | Vice-President |
| Y. Petroff | France | Vice-President |
| G. Righini | Italy | Vice-President |
| B.E.A. Saleh | U.S.A. | Vice-President |
| C. Sheppard | Australia | Vice-President |
| T. Tschudi | Germany | Vice-President |
| L.L. Wang | Netherlands | Vice-President |
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