By I.Y.R.Krishna Rao
By Bonigala Ramarao
By Dr.Shyam Prasad Pulavarthi
By Chekuri Ramarao
By G.V.Krishna Rao
By Dr. Mantha Bhanumathi
By Brahmasri Chaganti Koteswara Rao Sarma
By Aribandi Prasada Rao
By Galinaa Nikolayeva , Atluri Picheshwara Rao
By Padmasri Thurlapati Kutumbarao
By Dr. K Aravinda Rao
By Dr Alla Apparao
By A.S.Neel (Translated By Sunkara Ramachadra Rao)
By Challa Lakshmanrao
By Dr R B Kumar , Ranganatha Ramachandrarao
By P.M.Sundara Rao
By Mellacheruvu Venkata Subrahmanya Sastri
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