TY  - BOOK
AU  - Bock H H ed.
ED  - Conference of the International Federation of Classification Society( 1st : 1987 : AAchen )
ED  - 
TI  - Classification and related methods of data analysis
U1  - 000SA.073 
PY  - 1987///
CY  - Amsterdam
PB  - North Holland
KW  - Classification-statistics
ER  -