71.   It aims to take business from the Chicago Mercantile Exchange, now the only source for Mexican derivatives.

72.   It is often the only source in small Indian villages.

73.   Its guerrilla units inside Kosovo are the only eyewitness sources of information on Serb troop movements.

74.   Justin is one of those brilliant and ostracized high schoolers whose only source of satisfaction comes from proving to himself that he is smarter than everyone around him.

75.   Late Thursday, a premature end to the playoffs was the only source of frustration.

76.   Lawsuits by Enron shareholders and creditors are not the only sources of claims against Andersen that could tar an acquirer of the firm.

77.   Many dogs will spill their only source of water on a hot day.

78.   McCaffrey said he was pleased with the response so far, adding that while he views community boards as valuable, they are not the only source of suggestions.

79.   Mormons were not the only source of controversy in Independence.

80.   Nearly half of them are retired, relying on the rent from the bases as their only source of income.