AERE
Harwell, Berks

Argonne Cancer Research Hospital, University of Chicago
Chicago, IL

Argonne National Laboratory
Argonne, IL

CERN
Geneva, Switzerland

Catholic University of Louvain
Louvain, Belgium

Columbia University
New York, N.Y.

Continental Electronics Mfg. Co.
Dallas, Texas USA

Cryogenic Technology Inc.
Waltham, Mass.

Cyclotron Corporation
Berkeley, California

D.V. Efremov Scientific Research Institute of Electrophysical Apparatus
Leningrad, USSR

Dilworth, Secord, Meagher and Associates Ltd.
Toronto, Ontario, Canada

Eindhoven University of Technology
Eindhoven, Netherlands

Hahn-Meitner-Institut für Kernforschung
Berlin, Germany

Harvard University
Cambridge, Mass.

I.V. Kurchatov Atomic Energy Institute
Moscow, USSR

Indiana University
Bloomington, Indiana

Institut de Physique Nucléaire d'Orsay
France

Institut des Sciences Nucléaires
Grenoble, France

Institut für Experimentelle Kernphysik, Kernforschungszentrum
Karlsruhe, Germany

Institut für Kernphysik der Kernforschungsanlage
Jülich, Germany

Institute of Physical and Chemical Research
Saitama, Japan

Joint Institute for Nuclear Research
Dubna, USSR

Lahore College for Women
Lahore, Pakistan

Lawrence Berkeley Laboratory, University of California
Berkeley, California

Los Alamos Scientific Laboratory, University of California
Los Alamos, New Mexico

Michigan State University
East Lansing, Michigan, USA

Nuclear Physics Institute
Rez, Czechoslovakia

Nuclear Research Institute of Ukrainian Academy of Sciences
Kiev, USSR

Oak Ridge National Laboratory
Oak Ridge, Tennessee

P.N. Lebedev Physical Institute of USSR Academy of Sciences
Moscow

Royal Marsden Hospital
London, England

Saha Institute of Nuclear Physics
Calcutta, India

Scanditronix
Uppsala, Sweden

Stanford Linear Accelerator Center
Stanford, California, U.S.A.

Swiss Institute for Nuclear Research
Villigen, Switzerland

TRIUMF
Vancouver, B.C., Canada

Texas A&M University
College Station, Texas

Thomson-CSF, Accelerator Department
Orsay, France

University of Alberta
Edmonton, Alta., Canada

University of Birmingham
Birmingham, U.K.

University of British Columbia
Vancouver, B.C., Canada

University of California
Davis, California

University of Geneva

University of Islamabad
Pakistan

University of Michigan
Ann Arbor, Michigan

University of Rennes
France

University of Uppsala
Uppsala, Sweden

University of Washington
Seattle, Washington

Vancouver General Hospital and University of British Columbia
Vancouver, B.C., Canada

Varian Associates, Radiation Division
Palo Alto, California, U.S.A.

Zyklotron-Laboratorium, Kernforschungszentrum
Karlsruhe, Germany