Other sites
Battery and Agasthya https://www.iqmediacorp.com/ClipPlayer?ClipID=2f74cca8-08bc-4f78-a322-d684fa418c3b&TE=Hla2gnBNrINtcdo0iOmIU8o6w3lzZFuHYemOKe1Ft1s%3d&
http://swarnaprashana.org/category/holistic-child-care/
Elements of Magical Rituals: A Traditional
Practice of North Kerala
http://file.scirp.org/pdf/JSS_2015112609465012.pdf
Simple machines
https://www.scribd.com/doc/184131452/Yantrarnav-Machines-of-ancient-India-pdf
http://www.authorstream.com/Presentation/ashoknene-2987068-yantra-shastra-ancient-india/
http://www.onlinejournal.in/IJIRV2I7/027.pdf
water resources - water index checking https://www.thehindu.com/news/national/tamil-nadu/much-water-has-flowed/article8417860.ece
Manimekalai 26th chapter.vanji maa nagar pukka kaadhai..line number 83 to 85...kannagi directs manimekalai to learn about all religions and clear her doubts...இந்த மூதூர் அகத்தே அவ்வவர் சமயத்து அறி பொருள் கேட்டு மெய்வகை இன்னும் நினக்கே விளங்கிய பின்னர்