By Sri Nori Gurulinga Sastry
By A N Nageswara Rao
By Kasturi Murali Krishna
By Bikumalla Nageswara Siddanti
By Malladhi Venkata Krishna Murthy
By Tanguturi Prakasham Panthulu
By Malladi Venkata Krishna Murthy
By Kandukuri Venkata Satya Brahmacharya
By Kampalle Ravichandran
By Priyank Narayan
By Rentala Gopala Krishna
By Tadanki Venkata Lakshmi Narasimha Rao
By Carl Sagan And Translated By V.Srinivasa Chakravarthy
By Bhimeswarao Vemavarapu
By K B Gopalam
By Rasaraju
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