TY  - SER
AU  - Dahlberg,Ingetraut  .
TI  - International classification (1990) / 
U1  - 001.012 
PY  - 1990///
CY  - Frankfurt : 
PB  - INDEKS Verlag , 
KW  - LIBRARY AND INFORMATION SCIENCE
N1  - Library has : V.17, no.2 -4, 1990; NULL
ER  -