- 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 23) (2011-2012)}
- 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, 28, 31, 35, 45, 52 and 82) (2011-2012)}