Heer, D. M. (1992). Society and population. Prentice Hall.
Chicago-čujuhus (17. p.)Heer, David M. Society and Population. Englewood Cliffs, N. J.: Prentice Hall, 1992.
MLA-čujuhus (9. p.)Heer, David M. Society and Population. Prentice Hall, 1992.
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