By Pro. N.Venugopala Rao And Pro. K.Satya Prasad
C.V.Sarveswara Sarma And Mattaparthy Satyanarayana
Nisha Malhotra
Yakov Perelman (Translated By Dr. K.B.Gopalam)
Balala Science Vignanam
N.Mohan Krishna
Parragon
Atma K.Ravi
D.S.Triphonov
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