(3GdJdHS HGdLQjeI (B:s (3JYQja GdLQjeI GdeJdHS HgG(B-(3MGdGJ GdJdHS hNUGFUg (B/s - (3Ndjd, YOdjs ((3GdbGgQI (B:s (3OGQ GdfgVI GdYQHjI,s, 1989)
(3jTJed Ydi EQLGYGJ HHdjhLQGajI(B.s
Keywords: (3GdCOdI GdLfGFjIs; (3GdEKHGJ (B((3bGfhf(B)s -- (3eUQs; (3GdbGfhf GdLfGFjs -- (3eUQs