| Description | Correspondents include: MW Chaudhari, Maharaja's College, Japiur; S Balakrihna, Osmania University, Hyderabad; BC Roy, Geological Survey of India, Calcutta; MF Soonawala and MS Mehta, University of Rajashtan, Jaipur; PW Sahasrabudhe, Tata Institute of Fundamental Research, Bombay and VSL Bhimasankaram, Osmania University, Hyderabad |