TY  - BOOK
AU  - Dhyani, Pushpa :
TI  - Working with Dewey Decimal Classification : editions 19 and 20
SN  - 0706976231 
U1  - 025.431 
PY  - 1994///
CY  - New Delhi : 
PB  - Vikas Publishing House, 
KW  - Classification
ER  -