- Estimates of Principal Characteristics (2-Digit Level Classification-NIC 2008) under Annual Survey of Industries in Guntur District of Andhra Pradesh {(NIC : 01, 10 to 13 and 15 to 25) (2008-2009)}
- Estimates of Principal Characteristics (2-Digit Level Classification-NIC 2008) under Annual Survey of Industries in Guntur District of Andhra Pradesh {(NIC : 26 to 28, 31, 33, 35, 38, 45, 46, 52, 58 and 82) (2008-2009)}