Price, D. O. (1967). The 99th hour: The population crisis in the United States. Chapel Hill, NC: University of North Carolina Press.
Παραπομπή Chicago StylePrice, Daniel O. The 99th Hour: The Population Crisis in the United States. Chapel Hill, NC: University of North Carolina Press, 1967.
Παραπομπή MLAPrice, Daniel O. The 99th Hour: The Population Crisis in the United States. Chapel Hill, NC: University of North Carolina Press, 1967.
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