By Bikumalla Nageswara Siddanti
By Malladhi Venkata Krishna Murthy
By Tanguturi Prakasham Panthulu
By Itikala Bhaskar
By Malladi Venkata Krishna Murthy
By Kandukuri Venkata Satya Brahmacharya
By Dr Manjuluri Narasimharao
By Priyank Narayan
By Sudha Murty
By Rentala Gopala Krishna
By Tadanki Venkata Lakshmi Narasimha Rao
By V.V.Ramarao
By P.V.R.K.Prasad
By Paul De Kruif And Translated By Jammi Koneti Rao
By Carl Sagan And Translated By V.Srinivasa Chakravarthy
By Sujatha Velpuri
By Paramanandayya
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