(3EfJbGd GdMQGQI (B: s (3Mdhd GdeSGFd (B/ s - (3cGQdjcGQ, HgGdTGfOQG aj(B.s; (3ORehfO, QhHQJ(B. (3e(B.s; (3agej, CMeO UGHQ CMeOs; (3ShjOGf, eUWai eMeO eUWais ((3GdbGgQg (B:s (3GdOGQ GdYQHjI ddfTQ h GdJhRjY,s, 1989)
Keywords: (3GdMQGQIs