TY  - BOOK
AU  - Kumar , P.S.G
TI  - Practical guide to DDC 20
SN  - 8171920004
U1  - 025.431 
PY  - 1990///
CY  - Nagpur
PB  - Jawaharlal Nehru Marg sadar 
KW  - LIBRARY SCIENCE
KW  - DDC 20
ER  -