XIIth Plenary Assembly [of the CCIR] [English version] [electronic resource] : New Delhi, 1970 / ITU.

Volume I: Spectrum Utilization and Monitoring (Study Group 1)
Volume II - Part 1: Propagation in Non-Ionized Media (Study Group 5)
Volume II - Part 2: Ionospheric Propagation (Study Group 6)
Volume III: Fixed Service at Frequencies Below About 30MHz (Study Group 3); Standard Frequencies and Time Signals (Study Group 7); Vocabulary (CIV)
Volume IV - Part 1: Fixed Service Using Radio-Relay Systems (Study Group 9); Coordination and Frequency Sharing Between Communication-Satellite Systems and Terrestrial Radio-Relay Systems (Subjects Common to Study Groups 4 and 9)
Volume IV - Part 2: Fixed Service Using Communication Satellites (Study Group 4); Space Research and Radioastronomy (Study Group 2)
Volume V - Part 1: Broadcasting Service (Sound) (Study Group 10); Problems Common to Sound Broadcasting and Television (Subjects Common to Study Groups 10 and 11)
Volume V - Part 2: Broadcasting Service (Television) (Study Group 11); Transmission of Sound Broadcasting and Television Signals Over Long Distances (CMTT)
Volume VI: Mobile Services (Study Group 8)
Volume VII: Information Concerning the XIIth Plenary Assembly; Structure of the CCIR; Lists of Texts Adopted by the CCIR
Report 252-2: CCIR Interim Method for Estimating Sky-Wave Field Strength and Transmission Loss at Frequencies Between the Approximate Limits of 2 and 30 MHz
Supplement No. 1 to Report 340: CCIR Atlas of Ionospheric Characteristics
Report 440: General Graphical Symbols for Radiocommunications