(3fUhU GdTQb GdGOfi GdbOjeI GdeJYdbI HGdYgO GdbOje (B/ s - (3HQjJTGQO, LejSs; (3YHOGdMejO RGjO (B((3JYQjH hJYdjb(B)s; (3eMeO LeGd GdOjf eNJGQ (B((3eQGLY(B)s ((3GdbGgQI (B: s (3gjFI GdGKGQ GdeUQjI , s, 1987)
Keywords: (3JGQjNs; (3GdTQb GdGhSWs; (3hKGFbs; (3GdGSGWjQ GdbOjeIs