DIN EN ISO 4157-3 (1999-03)现行
Construction drawings - Designation systems Part 3: Room identifiers (ISO 4157-3:1998)
出版：German Institute for Standardisation (Deutsches Institut für Normung)
专家解读视频
ISO 4157-3:1998 - Identical
SS EN ISO 4157-3 Ed. 1 (1999) - Identical
UNE EN ISO 4157-3:1999 - Identical
NS EN ISO 4157-3 Ed. 1 (1999) - Identical
I.S. EN ISO 4157-3:1999 - Identical
NBN EN ISO 4157-3:1999 - Identical
NF EN ISO 4157-3:1999 - Identical
UNI EN ISO 4157-3:2003 - Identical
NEN EN ISO 4157-3:1999 - Identical
BS EN ISO 4157-3:1999 - Identical
SN EN ISO 4157-3:1998 - Identical
ONORM EN ISO 4157-3:2007 - Identical
