(3GdYah Yf GdYbhHI heOi LhGRg ai LQGFe GdGYJOGA Ydi GdMbhb h GdMQjGJ GdYGeI (B:s ( (3OQGSI dGMcGe GdbGfhfjf GdeUQi h GdaQfSi ebGQfI HGMcGe GdTQjYI GdGSdGejI (B) /s - (3YeQ GdaGQhb GdMSjfis ((3GdbGgQI (B:s (3OGQ GdfgVI GdYQHjI,s, 1987)
(3jTJed Ydi GQLGYGJ HHdjhLQGajI(B.s
Keywords: (3GdbGfhf GdLfGFis; (3GdYah Yf GdYbhHIs