Indus
Ravi
Bias
Sutlej
Gold and Silver
Copper and Bronze
Precious stones
All the above
M.S.Vats
Dayanand Sahani
Mortimer Wheeler
R.D.Benerjee
Dholavira
Harappa
Lothal
Kalibhangan
2300 - 1750 B.C
2800 - 1000 B.C
3000 - 1500 B.C
2000 - 500 B.C