1979 - 1983年美国 undocumented 外国人口的变化情况。 注：这里“undocumented alien population”可能是指“无合法身份记录的外国人口” ，具体准确含义需结合更多上下文来确定。
Change in the undocumented alien population in the United States, 1979-1983.
作者信息
Passel J S, Woodrow K A
出版信息
Int Migr Rev. 1987 Winter;21(4):1,304-34.
"This article presents estimates of the number of undocumented aliens included in the April 1983 Current Population Survey (CPS) derived by subtracting an estimate of the legally resident foreign born population from the survey estimate of all foreign born residents.... Also presented are similar estimates for the November 1979 CPS.... Estimates are presented by period of entry for Mexico and other groups of countries. Comparison of the April 1983 estimate with the census-based estimate and the November 1979 survey-based estimate provide an indication of growth in the undocumented alien population for 1980-83."
本文呈现了通过从所有外国出生居民的调查估计数中减去合法居住的外国出生人口估计数得出的、1983年4月当期人口调查（CPS）中无证外国人数量的估计值……还呈现了1979年11月当期人口调查的类似估计值……按墨西哥和其他国家组的入境时期给出了估计值。将1983年4月的估计值与基于人口普查的估计值以及1979年11月基于调查的估计值进行比较，可显示1980 - 1983年无证外国人口的增长情况。
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