By R.Natarajan (Prapancha Vaignanika Kathalu)
Prf. C.Mohana
Devaraju Maharaju
S.Venkatrao
Yakov Perelman (Translated By Dr. K.B.Gopalam)
Jammi Konetirao
E.Kommaraiah
C.V.Sarveswara Sharma
Swathi Book House
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