Broadcasting service (television) : supplement 2 to volume 1997 BT Series / ITU-R
1997 BT series : Broadcasting service (television): ITU-R recommendations / ITU-R
1997 M series - part 1 : land mobile service excluding IMT-2000: recommendations / ITU-R
1997 M series - part 5 : mobile satellite services and radiodetermination satellite service: recommendations / ITU-R