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Biology
2
Interval comments
2
Observed
2
Sample amount
2
Sex
2
Standard deviation
2
Antarctica
1
BIO
1
Duration
1
Duration, number of days
1
IPY
1
International Polar Year (2007-2008)
1
International Polar Year 2007-2008 IPY
1
Petrel_Is
1
Pygoscelis adeliae
1
Pygoscelis adeliae, egg laying date
1
Pygoscelis adeliae, hatching date
1
egg laying date
1
hatching date
1
number of days
1
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