keywords:
[population pessimists]
[population optimists]
[demographic dynamics]
[population size]
[population structure]
[population rate of change]
[size, structure, and rate of change]
[demographics]
keywords:
[population pessimists]
[population optimists]
[demographic dynamics]
[population size]
[population structure]
[population rate of change]
[size, structure, and rate of change]
[demographics]