1. Input by Indian rivers into the world oceans

   • V Subramanian

   OriginalPaper Pages: 77 - 88

2. A preliminary magnetic survey on the iron-ore formation of Addatigala, Andhra Pradesh

   • A V S Murty

   OriginalPaper Pages: 89 - 94

3. Boron in the carbonate rocks of the Kajrahat formation Mirzapur district, Uttar Pradesh

   • Rajendra P Sharma

   OriginalPaper Pages: 95 - 99

4. Differential thermal analysis and thermogravimetric studies of the Kaladgi (precambrian) argillites, Karnataka

   • M J Chandrasekhara Gowda
   • J S Venugopal
   • B V Govindarajulu

   OriginalPaper Pages: 101 - 107

5. Geomagnetic disturbance effects on equatorial spreadF

   • R G Rastogi
   • G D Vyas
   • H Chandra

   OriginalPaper Pages: 109 - 113

6. On the equatorial spreadF

   • R G Rastogi

   OriginalPaper Pages: 115 - 131

7. On the variability of the position of the equatorial electrojet axis in India

   • A V S Murty
   • D R K Rao

   OriginalPaper Pages: 133 - 137

8. The signature of the interplanetary magnetic field components on the low latitude geomagnetic field disturbance

   • S R Prabhakaran Nayar

   OriginalPaper Pages: 139 - 145

9. Integrated production and effective loss rates in the ionosphere

   • K N Iyer
   • R G Rastogi

   OriginalPaper Pages: 147 - 153

10. Ionization effects from cosmic sources of x-rays in the lower atmosphere

    • D P Sharma
    • U R Rao
    • K Kasturirangan

    OriginalPaper Pages: 155 - 163

11. Diffraction of ATS-6 signals by isolated ionospheric irregularities—Some new aspects

    • A I Trivedi
    • M R Deshpande
    • Hari Om Vats

    OriginalPaper Pages: 165 - 172

12. Frequency dependence of equatorial ionospheric scintillations

    • M R Deshpande
    • R G Rastogi
    • K Davies

    OriginalPaper Pages: 173 - 178