51.   The technique has been demonstrated at a handful of fish farms, but requires long-term investment before there is any return.

52.   The TELE-TV system will be demonstrated at a briefing today near Los Angeles.

53.   The town responded by passing a law that prohibited hand-clapping, booing and demonstrating at public meetings.

54.   The troops allowed a small group of demonstrators to cross their lines to demonstrate at the National Monument, demanding that former President Suharto be put on trial.

55.   The women who demonstrated at the Statehouse on Thursday agreed.

56.   These included six students shot and killed on Monday as they demonstrated at an elite university campus.

57.   They demonstrated at foreign embassies and withdrew their own blood to write slogans on walls.

58.   This was demonstrated at the recent conference on population in Cairo, where American delegates won praise from former critics on many issues.

59.   Wednesday, Castro demonstrated at The New York Times the wit and intelligence that so entrance the hundreds of American business leaders who make the pilgrimage to Havana.

60.   Opposition activists also demonstrated at river terminals disrupting movements of ferries.