Eng. designs in Ancient INDIA ji

Cultural heritage of India. Vol. VI: Science and technology
Priyadaranjan Ray ji

http://libibm.iucaa.ernet.in/wslxRSLT.php?A1=49980
 
http://www.chennaimath.org/istore/product/the-cultural-heritage-of-india-volume-6-hardbound/

*Glimpses from Ancient Indian Mathematics by Amartya Kumar Dutta
http://archives.mirroroftomorrow.org/blog/_archives/2012/1/15/4973560.html



*ask google ji:
"engineering design in ancient india"

http://www.speakingtree.in/spiritual-blogs/seekers/pilgrimage/ancient-indian-engineering-design

Ancient India's Engineering skills (BBC ji Documentary)
http://www.youtube.com/watch?v=uDJkVRkqKJY