Acronyms von A bis Z
L.11
-Empfehlung der "CCITT"/"ITU" von 1988: Joint use of tunnels by pipelines and telecommunication cables, and thestandardization of underground duct plans
-Empfehlung der "CCITT"/"ITU" von 1988: Joint use of tunnels by pipelines and telecommunication cables, and thestandardization of underground duct plans