ITU

Верен идее соединить мир

ITU-R Radiocommunication: Committed to connecting the world

ITU-R Radiocommunication: Committed to connecting the world
Edition of 2014  New!  

Available inpaper   electronic file
Other editions:   Edition of 2012   Edition of 2011   Edition of 2010   Edition of 2008   Edition of 2007