71.   The whale, estimated to be about two years old, apparently became separated from them after her mother died last year.

72.   There are estimated to be between three and six million mines strewn across Bosnia which pose a threat to civilians returning to thier homes.

73.   There are few challenges more daunting than AIDS in Botswana, estimated to be the worst infected country in the world.

74.   There are few challenges more daunting than AIDS in Botswana, estimated to be the worst-infected country in the world.

75.   Two of the blazes are estimated to be weeks away from containment, CDF spokesman Tony Akin said.

76.   Voter turnout was estimated to be high, though no official figures were made public.

77.   While license and applications revenues continue to expand, growth in its core database division is estimated to be flat or slightly negative.

78.   Worldwide, the figures are estimated to be many times that, especially in developing countries.

79.   Gold remaining in the mine is estimated to be worth one billion dollars.

80.   His empire is estimated to be worth five billion dollars.