TY  - SER
AU  - Dahlberg,Ingetraut
TI  - International classification (1988) / 
U1  - 001.012 
PY  - 1988///
CY  - Frankfurt : 
PB  - INDEKS Verlag , 
KW  - LIBRARY AND INFORMATION SCIENCE
N1  - Library has : V.15, no.1-3, 1988; NULL
ER  -