District census handbook: series 9: Kerala.
APA Citation
India. Director of Census Operations, K., Narayanan, K. (Krishnaswamy). (1972). District census handbook: series 9: Kerala. [Trivandrum].
MLA Citation
India. Director of Census Operations, Kerala, and K. (Krishnaswamy) Narayanan. District Census Handbook: Series 9: Kerala. [Trivandrum], 1972.
Warning: These citations may not always be complete (especially for serials).