References:

• Report on State of Indian agriculture 2015-16 / Government of India Ministry of Agriculture & Farmers Welfare
   
• Annual report 2016 – 17 and 2017-18 / Department of Agriculture, Cooperation and Farmers welfare
   
• About tractors in India
  https://en.wikipedia.org/wiki/Tractors_in_India
   
• https://www.scribd.com/doc/36863967/Analysis-of-Tractor-Industry-in-India#download
   
• http://elavarasanst.blogspot.com/2011/10/important-crops-intamilnadu.html
   
• http://agritech.tnau.ac.in/agriculture/agri_soilgroups.html
   
• http://www.fao.org/fileadmin/templates/ess/ess_test_folder/Workshops_Events/APCAS_24/PPT_after/APCAS-12-31-Agri_Census_India_APCAS24.pdf
   
• Tractor design and testing
  http://ecoursesonline.iasri.res.in/mod/page/view.php?id=126175
   
• Agriculture sector from Federation of Indian Chambers of Commerce and Industry
  http://ficci.in/spdocument/20682/agrimach
   
• Statistical data from Nation monster
  www.nationmaster.com/countryinfo/profiles/IndiaReport
  on Farm mechanisation inn National round table conference / January 2017

Other Links:
• Useful resource e-links related to 'Product Design'
• Mobility and Vehicle Design at IDC IIT Bombay

Case Study Download:
• Design of Next Generation Tractor in India......