Al. Nichols, INTERNATIONAL COMMITTEE FOR RADIONUCLIDE METROLOGY SYMPOSIUM ON RADIONUCLIDE METROLOGY AND ITS APPLICATIONS, TEDDINGTON, UK, JUNE 7-9, 1993- PREFACE, Nuclear instruments & methods in physics research. Section A, Accelerators, spectrometers, detectors and associated equipment, 339(1-2), 1994, pp. 180000007-180000007