TY  - BOOK
AU  - Ashok Kumar Singh
TI  - Vigyan Evan Prodhyogiki : civil seva pariksha heatu
SN  - 9780070655492
U1  - 507 ASH 
PY  - 2008///
CY  - New Delhi
PB  - Tata McGraw Hill Education Private Limited
KW  - Manual For Civil Services Exams
ER  -