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The Journal of Social, Political, and Economic Studies|July 1, 1996
The impact of immigration on U.S. demographicsJ E FallonThe Journal of Social, Political, and Economic Studies|January 1, 1993
Canadian immigration: an earlier perspectiveA GreerThe Journal of Social, Political, and Economic Studies|April 1, 1995
NSSM 200 and the world population explosionS D MumfordPageof 1