Five Elements and Cow - Panchagavya

1. Milk  ==   Chandran (Earth) 
2. Curd  ==   Vayu        (Air)
3. Ghee  ==   Sooryan  (Sky)
4. Urine ==   Varunan  (Water)
5. Dung  ==   Agni.      (Fire)

https://en.wikipedia.org/wiki/Panchagavya

Panch

1. http://www.panchgavya.org
2. https://panchvidya.org/
3. https://panchagavya.in

Gavya

1. http://www.gavyamart.com
2. http://www.gavyam.com/
3. https://www.gavyasiddh.org/
4. http://gavyamilk.com

http://www.pradosham.com/panchagavyam.php

Seminar
http://radhagovindagoshala.com/articles/panchagavya.html
Farming
http://agritech.tnau.ac.in/org_farm/orgfarm_panchakavya.html 
Tube
http://www.youtube.com/results?search_query=Panchagavya

yatvagasthi gatam papam dehe tishthti mamke
prasnat panchgavyasya dahasagnirivendhnam

Meaning : From skin to bones, what ever sins (diseases) are in my body, are destroyed by panchagavya just as fire destroys fuel.
https://www.slideshare.net/search/slideshow?searchfrom=header&q=panchgavya