S.R Ranganathan full introduction||Dr.s.r ranaganathan biography|अस आर रंगनाथन|| 

His birth date is also written 12 August 1892 but he himself wrote his birth date 9 August 1892 in his book...... Thank you

His birth date is also written 12 August 1892 but he himself wrote his birth date 9 August 1892 in his book,