Geological Survey of India Records, Vol. 124, Part I : Annual General Report, 1989-90/C.P. Vohra. Calcutta, Geological Survey of India, 1999, 329 p., tables, (pbk).

    Contents: Foreword. Introduction. 1. Central headquarters. 2. Airborne mineral surveys and exploration wing. 3. Coal wing. 4. Marine wing. 5. Central region. 6. Eastern region. 7. North eastern region. 8. Northern region. 9. Southern region. 10. Western region. 11. Training institute. 12. Appendix.

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