By R. Nageswara Rao
By Herman Hes and Translated By Bellamkonda Raghava Rao
By Dr Maddali Usha Gayatri
By Dr Marella Sri Ramakrishna
By Vuppala Lakshmana Rao
By Dr.G.Samaram
By Kula Nirmulana Prachuranalu (Multiple Authors)
By Sri Rangam Narayanababu
By T.Tatarao Yadav
By Jupaka Subhadra
By Srimathi Dinavahi Satyavathi
By Bonigala Ramarao
By Eden S Trinidad
By Mutharaju Subbarao (Xerox Copy)
By Srinadhudu
By Neli Chandrayya (Xerox Copy)
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