(3hbJ ddYGQ (B/s - (3GdMGQKj, agO GdYQGHj,s 1365 (3gLQj(B-s ([(3O(B.(3e(B] :s [(3O(B.(3f(B](3,s, 1991)
Keywords: (3MQH GdNdjL, (B1991s; (3GdchjJs -- (3JGQjNs -- (3GdGMJdGd GdYQGbj, (B1990-1991s