No.

Dates

Location

01st

April 28 - May 05, 1915

The Hague, The Netherlands

02nd

May 12-17, 1919

Zurich, Switzerland

03rd

July 10-17, 1921

Vienna, Austria

04th

May 01-07, 1924

Washington, District of Columbia, USA

05th

July 08-15, 1926

Dublin, Ireland

06th

August 24-28, 1929

Prague, Czechoslovakia

07th

May 15-19, 1932

Grenoble, France

08th

Sept. 03-08, 1934

Zurich Switzerland [no congress report published]

09th

July 27-31, 1937

Luhacovice, Czechoslovakia

10th

Aug. 04-09, 1946

Luxembourg

11th

Aug. 15-19, 1949

Copenhagen, Denmark

12th

Aug. 04-08, 1953

Paris, France

13th

July 23-28, 1956

Birmingham, England

14th

July 27-31, 1959

Stockholm, Sweden

15th

July 08-13, 1962

Asilomar, California, USA

16th

July 26-31, 1965

The Hague, The Netherlands

17th

Aug. 18-24, 1968

Nyborg Strand, Denmark

18th

Dec. 28, 1970 - Jan. 02, 1971

New Delhi, India

19th

July 17-20, 1974

Birmingham, England

20th

Aug. 11-15, 1977

Tokyo, Japan

21st

Aug. 19-23, 1980

Hamden, Connecticut, USA

22nd

July 31 - Aug. 06, 1983

Göteborg, Sweden

23rd

July 23-29, 1986

Woudschoten-Zeist, The Netherlands

24th

July 14-25, 1989

Sydney, Australia

25th

July 01-06, 1992

St. Cruz, Bolivia

26th

Aug. 01-06, 1995

Helsinki, Finland

27th

July 25-31, 1998

Baltimore, Maryland, USA