- Estimates of Principal Characteristics (2-Digit Level Classification-NIC 2008) under Annual Survey of Industries in Alappuzha District of Kerala {(NIC : 10, 11, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22 and 23) (2019-2020)}
- Estimates of Principal Characteristics (2-Digit Level Classification-NIC 2008) under Annual Survey of Industries in Alappuzha District of Kerala {(NIC : 24, 25, 26, 27, 28, 29, 30, 31, 32 and 33) (2019-2020)}