1. Ratio of pions to protons and ratio of neutral to charged interacting particles at mountain altitude of 800 gm/cm²

   • S. Lal
   • R. Raghavan
   • A. Subramanian

   OriginalPaper Pages: 213 - 222

2. On the spectral study of sunspot number and solar radio flux between 600 and 9400 MHz

   • D. R. K. Rao

   OriginalPaper Pages: 223 - 231

3. Diffraction of light by superposed parallel supersonic waves, one being then-th harmonic of the other. Solution of the system of difference-differential equations for the amplitudes by a series expansion method

   • Oswald Leroy

   OriginalPaper Pages: 232 - 239

4. Absorption and fluorescence spectra of praseodymium in KCl and KBr matrices

   • R. K. Asundi
   • R. C. Naik
   • P. Ramakoteswara Rao

   OriginalPaper Pages: 240 - 249

5. Studies in the formation of heterocyclic rings containing nitrogen

   • Khalil Ahmed
   • N. V. Subba Rao

   OriginalPaper Pages: 250 - 256

6. Transient gamma-ray sources

   • Krishna M. V. Apparao
   • T. N. Rengarajan

   OriginalPaper Pages: 257 - 260

7. Ideal gas thermodynamic properties of xenon compounds

   • Shanti A. Kudchadker
   • Arvind P. Kudchadker

   OriginalPaper Pages: 261 - 267