By K.V.Purneswara Rao
Dr. C.L.Garg (Pocket Guide Book)
V.S.R
Vaadavalli Prasannannjaneya Sarma
Sri Vasavaya (Sreevasavya)
Poojala Srinadh Yadav
Nagavalli Siva
Nachiketa
K.V.Purneswara Rao
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