Dòng Nội dung
1
Population and history / E. A. Wrigley.
Newyork : McGraw-Hill, c 1969.
256 p. : illus. (some col.), maps (some col.) ; 20 cm.



2
3
Introducing global issues / Michael T. Snarr, D. Neil Snarr.
Boulder, Colo. : L. Rienner Publishers, c2002
ix, 341 p. : ill., maps ; 23 cm.



4
5
The temper of our time / Eric Hoffer.
New York : Harper & Row, [1967].
xii, 111 p. ; 22 cm.