1. Agarwal A and Narain S 1997 Dying wisdom: Rise and fall of traditional water harvesting systems; Centre Sci. Environ., 117–125.
2. Amit W and Alpana D 2015 Burhanpur cultural landscape conservation: Inspiring quality for sustainable regeneration; Sustainability 7 932–946, https://doi.org/10.3390/su7010932.
3. Anon 2019 Groundwater resources of Kerala, March 2017; Central Ground Water Board, Ministry of Jal Shakti, Kerala Region, Thiruvananthapuram, 201p.
4. Anon 2020 Ground Water Year Book of Kerala, 2019–2020; Central Ground Water Board, Ministry of Jal Shakti, Kerala Region, Thiruvananthapuram, 135p.
5. Balakrishnan K 2018 Groundwater Exploration in Kerala as on 31.03.2017; Central Ground Water Board, Ministry of Jal Shakti, Kerala Region, Thiruvananthapuram.