Mitarbeit in Ausschüssen 
131 
International Organization for Standardization 
(ISO) 
Working Group 40 (Compasses): Sdireitling, Uhlig. 
Study Group for International Test Regulations 
for Magnetic Compasses, Binnacles and Ac 
cessories: Sdireitling, Uhlig. 
Union Radio Scientifique Internationale (URSI) 
Deutscher URSI-Landesausschuß: Voppel. 
International Union of Geodesy and Geophysics 
(IUGG) 
International Association of Geodesy (XÂG) 
International Gravity Commission: 
Dr. Fleisdier. 
Special Study Group "Measurements of Gra 
vity at Sea“: Dr, Fleisdier. 
International Association of Geomagnetism and 
Aeronomy (IAGA) 
Division V (Observatories, Instruments, Indi 
ces and Data) 
Working Group "Geomagnetic Instruments and 
Standards" : Voppel. 
International Federation of Surveyors (IFS) 
Commission IV (Hydrographic Surveys) : Dr. 
Bettac. 
Internationaler Schiffbau-Kongreß 
Komitee „Environment": Prof. Dr. Walden. 
Scientific Committee on Oceanic Researdi (SCQR) 
Working Group “Upwelling": Dr. Mittelstaedt.