(3GdfXQjI GdYGeI ddLRGA GdLfGFj (B( (3GdYbhHGJ h GdJOGHjQ GdGMJQGRjI (B) :s (3OQGSI ebGQfI HGdTQjYI GdGSdGejI (B/s - (3SYjO YHOGddWja MSfs ((3GdbGgQI (B:s (3OGQ GdfgVI GdYQHjI,s, 1991)
(3jTJed Ydi GQLGYGJ HHdjhLQGajI(B.s
Keywords: (3GdbGfhf GdLfGFis; (3GdLRGA GdLfGFjs