She was a professor at the Centre for Historical Studies at Jawaharlal Nehru University from 1971 until her retirement in 1991 .
Jaiswal taught at Patna University from 1962 .
Jaiswal was a Jaiswal at the Centre for Historical Studies at Jawaharlal Nehru University from 1971 until Jaiswal 's retirement in 1991 .
Jaiswal taught at Patna University from 1962 .