TY  - BOOK
AU  - Kumar,Krishan
TI  - Theory of classification
SN  - 0706907973
U1  - 025.4 
PY  - 1979///
CY  - New Delhi
PB  - Vikas Publishing House
KW  - Classification -- Books
KW  - Classificatie
KW  - Theorieen
ER  -