By Kasturi Muralikrishna
By Prasad
By Melvadi Raghavachary
By Chivukula Purushottam
By Carl Sagan And Translated By V.Srinivasa Chakravarthy
By Herman Hes and Translated By Bellamkonda Raghava Rao
By Vadrevu Veeralakshmi Devi And K.N.Malleswari
By Dr. Potaraju Venkateswara Rao
By Ranganayakamma
By Penugonda Lakshminarayana
By Penugonda Lakshminarayana Valluri Sivaprasad Dr A K Prabhakar
By ravi sastry
By madhurantakam
By gakhale
By Andhrapradesh Abhyudaya Rachayitala Sangham
By kaluvakolanu
By P Satyavathi
By Valluri Sivaprasad Penugonda Lakshmi Narayana Appallnaidu
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