(3KhQI(B23 (3jhdjh h GUhd GdYed GdKhQi GdeUQi (B/ s - (3GdbHGfi (B: (3HcQ s ((3GdbGgQI (B:s (3OGQ GdfgVI GdYQHjI (B:s, 1970)
(3jTJed Ydi GQLGYGJ HHdjhLQGajIs
Keywords: (3eUQs -- (3GdSjGSI h GdMcheIs; (3eUQs -- (3JGQjNs -- (3GdYUQ GdMOjKs -- (3KhQI (B1952s