Progressives for Immigration Reform
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David Pimentel, Joseph R. Guzzardi, Philip J. Cafaro, Ben Zuckerman, Leon Kolankiewicz
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Californians for Population Stabilization
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Joseph R. Guzzardi, Ben Zuckerman, Stuart Hurlbert, Leon Kolankiewicz
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Scientists and Environmentalists for Population Stabilization
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David Pimentel, Paul K. Nachman, Stuart Hurlbert, Leon Kolankiewicz
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The Social Contract
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Roy Beck, Joseph R. Guzzardi, Leon Kolankiewicz
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Federation for American Immigration Reform
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Joseph R. Guzzardi, Paul K. Nachman
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Sprawl City
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Roy Beck, Leon Kolankiewicz
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Center for Immigration Studies
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Philip J. Cafaro, Leon Kolankiewicz
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Californians for Equal Rights Foundation
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Stuart Hurlbert
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Sierra Club
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Ben Zuckerman
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Colcom Foundation
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John F Rohe
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Laurel Foundation
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John F Rohe
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VDARE
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Joseph R. Guzzardi
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The Weeden Foundation
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Donald A. Weeden
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Colorado State University
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Philip J. Cafaro
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