By Emani Sivanagi Reddy (Eng - Alexander Ree)
Carl Sagan And Translated By V.Srinivasa Chakravarthy
S.Krishna Swamy Ayyangar
Dr.Vavilala Subbarao
Rajendra Prasad
Sai Papineni
Michel Ilin (Gnanam Punarvikasam)
Sodhana
B.Rajendra Prasad
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