TY  - SER
AU  - Dahlberg,Ingetraut
TI  - International classification (1992) / 
U1  - 001.012 
PY  - 1992///
CY  - Frankfurt : 
PB  - INDEKS Verlag , 
KW  - LIBRARY AND INFORMATION SCIENCE
N1  - Library has : V.19, no.1 -4, 1992; NULL
ER  -