TY  - BOOK
AU  - Wahlin Ejnar
TI  - Research on classification systems:  International federation for documentation,   committee on clssification research Report No 17
T2  - FID pub; 405
U1  - 2:51:f, L9 
PY  - 1979///
CY  - Bangalore
PB  - FID/CR secretariat      
KW  - LIBRARY SCIENCE
ER  -