- Estimates of Principal Characteristics (2-Digit Level Classification-NIC 08) under Annual Survey of Industries in Visakhapatnam District of Andhra Pradesh {(NIC : 10, 11, 13, 14 and 16 to 27) (2010-2011)}
- Estimates of Principal Characteristics (2-Digit Level Classification-NIC 08) under Annual Survey of Industries in Visakhapatnam District of Andhra Pradesh {(NIC : 28 to 33, 35 to 38, 45, 52, 58, 71 and 96) (2010-2011)}