[59] Proposed modification to Recommendation ITU-R P.453-14 - Global digital maps of surface and elevated ducts

[59] Proposed modification to Recommendation ITU-R P.453-14 - Global digital maps of surface and elevated ducts

Document :	ITU-R WP3J.AR Contribution 59
Title :	Proposed modification to Recommendation ITU-R P.453-14 - Global digital maps of surface and elevated ducts
Date :	2021-06-09
Source :	China (People's Republic of)
Access :	Restricted to TIES users [ITU-R]