(3bhGfjf GdJShjI hGdReI hGdYbQ hGdGfXeI hGdHjGfGJ hGdJYdjeGJ GdUGOQI HehLHgG (B/ s - (3GdSGeQGFj, cGed, s ((3HZOGO (B[(3GdYQGb(B] : s (3efThQGJ ecJHI GdeKfi (B948.s, 1948)
(3jJVef GQLGYGJ HHdjhLQGajI(B.s
Keywords: (3GdedcjI GdYbGQjIs -- (3bhGfjf hJTQjYGJs -- (3GdYQGb(B.s; (3GdbGfhf GdeOfjs -- (3GdYQGb(B.s