- Estimates of Principal Characteristics (2-Digit Level Classification-NIC 2008) under Annual Survey of Industries in Sri Potti Sriramulu Nellore District of Andhra Pradesh {(NIC : 10 to 18 and 20 to 23) (2012-2013)}
- Estimates of Principal Characteristics (2-Digit Level Classification-NIC 2008) under Annual Survey of Industries in Sri Potti Sriramulu Nellore District of Andhra Pradesh {(NIC : 24, 25, 27 to 29, 31, 33, 35, 45, 52 and 82) (2012-2013)}