(3TQM bGfhf GdYbhHGJ (B:s (3GdbSe GdYGe (B- (3GdJLQje (B.(3GdeLQe(B. (3GdLQjeI(B.(3GdYbhHI(B/s - (3eMehO eMehO eUWais ((3GdGScfOQjI (B:s (3OGQfTQ GdKbGaI (B,s, 1950)
Keywords: (3bGfhf GdYbhHGJ (B-(3GdbSe GdYGe s; (3GdbGfhf GdLfGFi(B.s