- Estimates of Principal Characteristics (2-Digit Level Classification-NIC 2008) under Annual Survey of Industries in Chittoor District of Andhra Pradesh {(NIC : 01 and 10 to 18) (2011-2012)}
- Estimates of Principal Characteristics (2-Digit Level Classification-NIC 2008) under Annual Survey of Industries in Chittoor District of Andhra Pradesh {(NIC : 19 to 28) (2011-2012)}
- Estimates of Principal Characteristics (2-Digit Level Classification-NIC 2008) under Annual Survey of Industries in Chittoor District of Andhra Pradesh {(NIC : 30 to 32, 35, 36, 45, 51, 52 and 58) (2011-2012)}