Council 2006-2010
President: Takamitsu Yamanaka (Japan)
Past-President: Ian Parsons (UK)
1st Vice-President: Ekkehart Tillmanns
2nd Vice-President: Nicolai Yushkin
Secretary: Maryse Ohnenstetter (France)
Treasurer: Robert Downs
Communication Officer: Frances Wall
Councillors: Joel Grice, Kari Kojonen, Anhuai Lu, Walter Maresch, Marcello Mellini,

Council 2002-2006
President: Ian Parsons (UK)
Past-President: Anthony Naldrett
1st Vice-President: Takamitsu Yamanaka (Japan)
2nd Vice-President: Nicolai Yushkin
Secretary: Maryse Ohnenstetter (France)
Treasurer: Cornelis Klein
Councillors: Alain baronnet, Ian Campbell, Kari Kojonen, Marcello Mellini, Werner Schreyer*

Council 1998-2002
President: Anthony Naldrett
Past-President: Stefano Merlino
1st Vice-President: Ian Parsons
2nd Vice-President: Shigeho Sueno*, replaced by Nicolai Yushkin
Secretary; Tamas Weisburg up to 2001
Interim Secretary: Maryse Ohnenstetter (2001-2002)
Treasurer: Cornelis Klein
Councillors: Alain baronnet, Ian Campbell, Werner Schreyer, Andrzej Szymansky**, Nicolai Yushkin
* died in 2001;

Council 1994-1998
President:
Past-President:
1st Vice-President:
2nd Vice-President
Secretary:
Treasurer
Councillors:

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Council 1990-1994
President Xiande Xie (China)
Past-President: P.J. Wyllie (U.S.A.)
1st Vice-President S. Merlino (Italy)
2nd Vice-President N.V. Sobolev (U.S.S.R.)
Secretary; S.S. Hafner (West Germany)
Treasurer P.C. Zwaan (The Netherlands)
Councillors: P. Henderson (U.K.), F. Marumo (Japan), H.O. A. Meyer (U.S.A.), A.J. Naldrett (Canada), D.P. Svisero (Brazil)

Council 1986-1990
President: P.J. Wyllie (U.S.A.)
Past-President: I. Kostov (Bulgaria)
1st Vice-President: Yunhui Huang (China)
2nd Vice-President W.S. Mackenzie (U.K.)
Secretary: S.S. Hafner (West Germany)
Treasurer P.C. Zwaan (The Netherlands)
Councillors: M. Lagache (France), O.V. Petersen (Denmark), D.G.W. Smith (Canada), N.V. Sobolev (U.S.S.R.), I. Sunagawa (Japan)

Council 1982-1986
President : I. Kostov (Bulgaria)
Past-President: C. Guillemin (France)
1st Vice-President: P.J. Wyllie (U.S.A.)
2nd Vice-President: D.S. Coombs (New Zealand)
Secretary: S.S. Hafner (West Germany)
Treasurer P.C. Zwaan (The Netherlands)
Councillors: G. Gottardi (Italy), E.R. Segnit (Australia), D.G.W. Smith (Canada), N.V. Sobolev (U.S.S.R.), R.V. Vochten (Belgium)

Council 1978-1982
President: C. Guillemin (France)
Past-President: V.S. Sobolev (U.S.S.R.)
1st Vice-President: I. Kostov (Bulgaria)
2nd Vice-President: P.J. Wyllie (U.S.A.)
Secretary: G. Tennyson (West Germany)
Treasurer L.G. Berry (Canada)
Councillor: D.S. Coombs (New Zealand), M. Font-Altaba (Spain), R.A. Howie (U.K.), I. Sunagawa (Japan), H. Sorensen (Denmark)

Council 1974-1978
President : V.S. Sobolev (U.S.S.R.)
Past-President: H. Strunz (West Germany)
1st Vice-President: C. Guillemin (France)
2nd Vice-President: M. Fornaseri (Italy)
Secretary: M. Hooker (U.S.A.)
Treasurer L.G. Berry (Canada)§
Councillors: D.S. Coombs (New Zealand), M. Font-Altaba (Spain), R.A. Howie (U.K.), I. Sunagawa (Japan), J. Zemann (Austria)

Council 1970-1974
President : H. Strunz (West Germany)
Past-President: C.E. Tilley (U.K.)
1st Vice-President: T. Watanabe (Japan)
2nd Vice-President C. Guillemin (France)
Secretary: M. Hooker (U.S.A.)
Treasurer: L.G. Berry (Canada)
Councillors: M. Fornaseri (Italy), T. Hügi (Switzerland), I. Kostov (Bulgaria)

Council 1964-1970
President: C.E. Tilley (U.K.)
Past-President: D.J. Fisher (U.S.A.)
1st Vice-President: H. Strunz (West Germany)
2nd Vice-President: D.S. Korzhinskii (U.S.S.R.)
Secretary: A Preisinger (Austria)
Treasurer : L.G. Berry (Canada)
Councillors: T.W.F. Barth (Norway), J. Kutina (Czechoslovakia), T. Watanabe (Japan)

Council 1960-1964
President : D.J. Fisher (U.S.A.)
Past-President: R.L. Parker (Switzerland)
1st Vice-President: C.E. Tilley (U.K.)
2nd Vice-President: G.P. Barsanov (U.S.S.R.)
Secretary: J.L. Amoros (Spain)
Treasurer : L.G. Berry (Canada)
Councillors: M.G.C. Naidu (India), T.G. Sahama (Finland), H.G.F. Winkler (West Germany)

Council 1958-1960
President: R.L. Parker (Switzerland)
Past-President: J.F. Claringbull (U.K.)*
1st Vice-President: F.E. Wickman (Sweden)
2nd Vice-President: D.P. Grigoriev (U.S.S.R.)
Secretary: J.L. Amoros (Spain)
Treasurer D.J. Fisher (U.S.A.)
Councillors: J. Orcel (France), E. Onorato (Italy), T. Ito (Japan) 

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