25.		Mobile, radiodetermination, amateur and related satellite services : recommendations of the CCIR, 1990: (also and resolutions and opinions): volume VIII / International Telecommunication Union Data Publicação: 1990 Tema: Radiocomunicações
26.		Fixed service using radio-relay systems : recommendations of the CCIR, 1990: (also and resolutions and opinions): volume IX - part 1 / International Telecommunication Union Data Publicação: 1990 Tema: Radiocomunicações
27.		Broadcasting service (sound) : recommendations of the CCIR, 1990: (also and resolutions and opinions): volume X - part 1 / International Telecommunication Union Data Publicação: 1990 Tema: Radiocomunicações
28.		Broadcasting-satellite service (sound and television) : recommendations of the CCIR, 1990: (also and resolutions and opinions): volume X and XI- part 2 / International Telecommunication Union Data Publicação: 1990 Tema: Radiocomunicações
29.		Sound and television recording : recommendations of the CCIR, 1990: (also and resolutions and opinions): volume X and XI- part 3 / International Telecommunication Union Data Publicação: 1990 Tema: Radiocomunicações
30.		Television and sound transmission (CMTT) : recommendations of the CCIR, 1990: (also resolutions and options): volume XII / International Telecommunication Union Data Publicação: 1990 Tema: Radiocomunicações
31.		Vocabulary (CCV) : recommendations of the CCIR, 1990: (also and resolutions and opinions): volume XIII / International Telecommunication Union Data Publicação: 1990 Tema: Radiocomunicações
32.		Spectrum utilization and monitoring : reports of the CCIR, 1990: (also decisions): annex to volume I / International Telecommunication Union Data Publicação: 1990 Tema: Radiocomunicações
33.		Space research and radioastronomy services : reports of the CCIR, 1990: (also opinions): annex to volume II / International Telecommunication Union Data Publicação: 1990 Tema: Radiocomunicações
34.		Fixed service at frequences below about 30 Mhz : reports of the CCIR, 1990: (also decisions): annex to volume III / International Telecommunication Union Data Publicação: 1990 Tema: Radiocomunicações
35.		Fixed-satellite service : reports of the CCIR, 1990: (also decisions): annex to volume IV - part 1 / International Telecommunication Union Data Publicação: 1990 Tema: Radiocomunicações
36.		Frequency sharing and coordination between systems in the fixed-satellite service and radio-relay systems : reports of the CCIR, 1990: (also decisions): annex to volumes IV and IX - part 2 / International Telecommunication Union Data Publicação: 1990 Tema: Radiocomunicações