http://127.0.0.1/xmlui/handle/123456789/2416 Thu, 16 Apr 2026 16:23:19 GMT 2026-04-16T16:23:19Z http://127.0.0.1/xmlui/handle/123456789/2417 Study of Igneous Activity in Vernula-Pulivendla Parnapalle Region Andhra Pradesh India: and its Relation to Nonmetallic Mineralisation Rao, M. Nageswara Sun, 01 Oct 1967 00:00:00 GMT http://127.0.0.1/xmlui/handle/123456789/2417 1967-10-01T00:00:00Z