organized by the Fraunhofer Institut für Physikalische Messtechnik (Freiburg) under the auspices of the Bundesministerium für Forschung und Technologie and the Commission on the European Communities ; edited by R. Grisar ... [and others]
organized by the Fraunhofer Institut für Physikalische Messtechnik (Freiburg) under the auspices of the Commission of the European Communities ; edited by R. Grisar ... [and others]