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Browsing results matching Population aging -- United States.

	Subject	Items
1.	Population aging -- United States.	2
2.	Population biology	3
3.	See Also Biological invasions	9
4.	See Also Biotic communities	18
5.	See Also Animal populations	4
6.	Population -- Charts, diagrams, etc.	1
7.	Population -- Collected works.	1
8.	Population -- Congresses.	1
9.	Population control	0
10.	See Birth control	17
11.	Population declines, Bird	0
12.	See Bird declines	1
13.	Population density	1
14.	See Also Urban density	1
15.	Population -- Drama.	5
16.	Population dynamics of fishes	0
17.	See Fish populations	1