He graduated with honors in geology from the Presidency College , Madras , in 1919 , undertook post-graduate training and research at Imperial College London in 1921 and in 1924 , he was awarded the PhD .
Krishnan was born on 24 August 1889 in Tanjore , Madras Presidency .
Krishnan graduated with honors in geology from the Presidency College , Madras , in 1919 , undertook post-graduate training and research at Imperial College London in 1921 and in 1924 , Krishnan was awarded the PhD .
Krishnan was born on 24 August 1889 in Tanjore , Madras Presidency .