TY  - SER
AU  - Dahlberg,Ingetraut  .
TI  - International classification (1989) / 
U1  - 001.012 
PY  - 1989///
CY  - Frankfurt : 
PB  - INDEKS Verlag , 
KW  - LIBRARY AND INFORMATION SCIENCE
N1  - Library has : V.16, no.1 -2, 1989; NULL
ER  -