By Sri Chakravarthula Padmanabha Sastri
By Dr Gunji Venkataratnam
By Kurimeti Janaki Ramaiah
By Brahmasri Chaganti Koteswara Rao Sarma
By B.N.Singh
By James Gleick And Translated by Srinivasa Chakravarthy
By Sri Chakravathula Padhmanaba Sasthri
By Koganti Vijayalakshmi
By Merlapaka Murali
By Ravinutala Suvarnakannan
By Valluri Siva Prasad
By Kandukuri Venkata Satyabrahmacharya M A
By Dr D Sambamurty
By P Prasad
By G Valliswar
By T.Sailaja
By Hari Atchyutarama Sastry
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