1. The propagation of ultrasonic waves in piezoelectric semiconductors

   • K. S. Viswanathan
   • S. Rajam

   OriginalPaper Pages: 45 - 56

2. Kinetics of oxidation of aromatic ketones by peroxydisulphate catalysed by silver ions

   • P. L. Nayak
   • N. C. Khandual

   OriginalPaper Pages: 57 - 64

3. Excess volumes and viscosities of Dioxane-Pyridine mixture

   • M. V. Prabhakara Rao
   • P. R. Naidu

   OriginalPaper Pages: 65 - 71

4. n-dimensional array languages and description of crystal symmetry—I

   • Rani Siromoney
   • Kamala Krithivasan
   • Gift Siromoney

   OriginalPaper Pages: 72 - 88