TY  - BOOK
AU  - Singh, Umesh Kumar  .
TI  - Fortifications in ancient India / 
SN  - 978-81-7479-104-7
U1  - V44`C 
PY  - 2011///
CY  - New Delhi : 
PB  - Kaveri Books , 
KW  - History- Ancient India
ER  -