- Estimates of Principal Characteristics (2-Digit Level Classification-NIC 2008) under Annual Survey of Industries in Prakasam District of Andhra Pradesh {(NIC : 22 to 25, 32, 35, 45 and 52) (2012-2013)}
- Estimates of Principal Characteristics (2-Digit Level Classification-NIC 2008) under Annual Survey of Industries in Prakasam District of Andhra Pradesh {(NIC : 01, 10 to 13 and 16 to 18, 20 and 21) (2012-2013)}