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AIRO
Italian OR society.
Australian Society for Operations Research (ASOR)
Membership, meetings, resources.
Aðgerðarannsóknafélag Íslands
Icelandic Operations Research Society (ICORS).
Canadian Operational Research Society/Société Cana
Bulletin, meetings, careers, membership information and other resources. French and English site.
Dansk Selskab for Operationsanalyse
Danish OR society.
Gesellschaft für Operations Research e. V.
German OR society.
Hungarian Operations Research Society
Publications, meetings, jobs and other resources.
INFORMS
Institute for Operations Research and the Management Sciences. American OR society.
Netherlands Society for Statistics and Operational
VVS: Vereniging voor Statistiek en Operationele Research / Netherlands Society for Statistics and Operations Research.
OEGOR
Austrian OR society.
Operational Research Society
United Kingdom OR society.
Operational Research Society of Italy (AIRO)
Membership, meetings, publications.
Operational Research Society of New Zealand
Membership, meetings, resources.
Operational Research Society of Singapore
Membership, meetings, jobs, resources.
ORBEL
Begian Operations Research Society - proposes an agenda of conferences as well as teaching information on O.R.
ORSSA
South African OR society.
ROADEF
French OR society.
S.E.I.O.
Spanish OR society.
Suomen Operaatiotutkimusseura ry
Finnish OR society.
The Operational Research Society - Study Groups &a
Details of news, forthcoming presentations and study materials of regional branches of the society.