International Scientific Radio Union. Commission on Radio and Troposphere Bezüge im Wissensnetz Aut (1) DNB-Titeldaten Proceedings of Commission II on Radio and Troposphere during the ... general assembly of URSI Creator (1) DNB-Titeldaten Proceedings of Commission II on Radio and Troposphere during the ... general assembly of URSI Isb (1) DNB-Titeldaten Proceedings during the ... general assembly of URSI Administrative Überordnung der Körperschaft (1) GND-Körperschaften International Scientific Radio Union