Document :

ITU-R�SG04� Contribution� 193

Title :

Executive Report of the thirtieth and thirty-first meetings of Working Party 4B (Geneva, 2-6 May 2011 and 19-23 September 2011)

Date :

2011-09-28

Source :

Chairman, WP 4B

Access :

Restricted to TIES users�[ITU-R]