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Argentina
2
Biology
Ecology
2
PSW
2
Patagonia
2
Valdes Peninsula
aerial surveys
2
marine environment
2
marine mammals
2
population number
2
Conservation
1
Eubalaena australis
1
Mirounga leonina
1
behaviour
1
breeding
1
census
1
geographical distribution
1
growth
1
mortality
1
nature conservation
1
protected resources
1
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