NumbersUSA
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Roy Beck, Joseph R. Guzzardi, Leon Kolankiewicz
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Center for Immigration Studies
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John Tanton, Leon Kolankiewicz
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Federation for American Immigration Reform
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John Tanton, Joseph R. Guzzardi
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Progressives for Immigration Reform
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Joseph R. Guzzardi, Leon Kolankiewicz
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Californians for Population Stabilization
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Joseph R. Guzzardi, Leon Kolankiewicz
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Sprawl City
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Roy Beck, Leon Kolankiewicz
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Social Contract Press
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John Tanton, Wayne Lutton
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VDARE
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Joseph R. Guzzardi
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Scientists and Environmentalists for Population Stabilization
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Leon Kolankiewicz
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US Inc
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John Tanton
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