TY  - BOOK
AU  - CCITT
TI  - BLUE BOOK,VOLUME X,FASCICLE X.2: ANNEX D TO RECOMMENDATION Z.100:SDL USER GUIDELINES, IXTH PLENARY AS
SN  - ERNET
U1  - 335 
PY  - 1989///
CY  - GENEVA
PB  - ITU
N1  - SC-021
ER  -