(3GdGSdGe h GdfhHI ai GdYUhQ GdhSWi (B: s (3HMK ai JGQjN GdShOGf h MVGQJg MJi GhGFd GdbQf GdSGOS YTQ GdejdGOi (B/ s - (3eSYO (B: (3eUWai eMeOs ((3GdbGgQI (B: s (3ecJHI GdGfLdh GdeUQjI (B: s, 1960)
(3jTJed Ydi GQLGYGJ HHdjhLQGajI (B((3U(B283-297s
Keywords: (3GdShOGfs -- (3JGQjNs -- (3GdYUhQ GdhSWis