TY  - BOOK
AU  - Comaromi J P
AU  - Satija M P
TI  - Exercises in the 20th edition of the Dewey Decimal Classification
U1  - 025.4 
PY  - 1990///
CY  - New Delhi
PB  - Sterling pub
KW  - Classification
KW  - DDC 20
ER  -