1. Extraction of copper, nickel and cobalt from sea nodules;Sridhar;J. Met.,1976
2. Non-ferrous metal recovery from deep sea nodules;Sridhar,1977
3. Recovery of metal values from manganese nodules;Agarwal,1975
4. Recovery of metal values from manganese nodules;Agarwal,1974
5. Kennecott process for recovery of copper, nickel, cobalt and molybdenum from ocean nodules;Agarwal,1978