Irryavirah J. A. M. C. P., . (1988). Text book of Physics Pre degree second year. : .
Irryavirah J Abraham M.S Chakkunny P.V, . 1988. Text book of Physics Pre degree second year. : .
Irryavirah J Abraham M.S Chakkunny P.V, . Text book of Physics Pre degree second year. : . 1988.