1. Agrawal PK (2003) Impact of climate change on Indian agriculture. J Plant Biol 30:189–198
2. Brooks David B (2003) Another path not taken: a methodological exploration of water soft paths for Canada and elsewhere. Report to Environment Canada, Friends of the Earth Canada, Ottawa, ON
3. Caviedes C (2001) El Niño in history: storming through the ages. University Press of Florida. ISBN 0-8130-2099-9
4. Centre for Science and Environment (2017)
http://www.cseindia.org
. Accessed 7 Sept 2017
5. City Population (2017) Delhi (India): Union Territory, major agglomerations & towns—population statistics in maps and charts. Retrieved 28 Feb 2017 from
https://www.citypopulation.de/India-Delhi.html