TY  - BOOK
AU  -  Siddique,Abu Bakr
AU  - Khan,M.S.
TI  - DDC number building and number analysis: a mathematical synposis 
U1  - 025.43 
PY  - 1972///
CY  - Dacca, Bangladesh : 
PB  - Abu Bakr Siddique
KW  - Classification
KW  - Dewey decimal
ER  -