(3eNJGQGJ ef eSQMjGJ Th GdbUjQI (B/ s - (3Ydi GOges; (3Th, L (B. (3Hs; (3ejTjd YHOGdGMOs ((3GdbGgQI (B: s (3eDSSI QhRGdjhSa , s, 1961)
Keywords: (3GdeSQMjGJ GdGeQjcjIs; (3GdGOH GdGeQjci GdeJQLes; (3GdGOH GdYGdei GdeJQLes