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
KW  - Classification, Dewey decimal
N1  - Running title: Dewey decimal classification; Includes bibliographical references
ER  -