1. A qualitative appraisal of geomagnetic manifestations of the geological structures in the Indian equatorial region

   • A V S Murty
   • D R K Rao

   OriginalPaper Pages: 1 - 5

2. Rb-Sr age of Godhra and related granites, Gujarat, India

   • K Gopalan
   • J R Trivedi
   • S G Patel

   OriginalPaper Pages: 7 - 17

3. Vanadium, manganese and iron in the carbonate rocks of the Rohtas formation

   • Rajendra P Sharma

   OriginalPaper Pages: 19 - 28

4. Annual fallout of³²Si,²¹⁰Pb,²²Na,³⁵S and⁷Be in rains in India

   • D Lal
   • V N Nijampurkar
   • B L K Somayajulu

   OriginalPaper Pages: 29 - 40

5. On the interpretation of velocities derived from spaced fading records

   • H Chandra

   OriginalPaper Pages: 41 - 49

6. Solar zenith angle and frequency dependence of ionosphericD-region absorption

   • S L Jain
   • R K Rai

   OriginalPaper Pages: 51 - 56

7. Remote probing ofD-region irregularities

   • H Chandra
   • R A Vincent

   OriginalPaper Pages: 57 - 68

8. Variation ofF-region nighttime neutral temperatures with equatorial spread-F activity

   • T N Rajaraman
   • J N Desai
   • S S Degaonkar

   OriginalPaper Pages: 69 - 75