By S.Venkatrao
Atma K.Ravi
Yakov Perelman (Translated By Dr. K.B.Gopalam)
Dr. G.Samaram
Prabhakar Sanjigiri
T.V.Venkateswaran
A.P.J.Abdul Kalam And Srujan Paul Singh
Kappagantula Raja Rama Mmohan Babu
Multiple Authors
S.Venkatrao
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