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ebrary, Inc
380
De Gruyter
365
ProQuest (Firm)
249
International Organization for Migration
230
Great Britain Colonial Office
133
Organisation for Economic Co-operation and Development
132
United States Congress. House. Committee on Immigration and Naturalization
99
EBSCOhost
94
Taylor & Francis
93
Taylor & Francis eBooks
93
ProQuest ebook central
89
United States General Accounting Office
86
United States Immigration and Naturalization Service
86
Adam Matthew Digital (Firm)
70
Walter de Gruyter & Co
69
United States Immigration Commission (1907-1910)
61
Project Muse
58
JSTOR (Online Service)
56
United States Congress. Senate. Committee on Immigration
55
United States
53
United States Department of State
52
Alumni and Friends Memorial Book Fund
49
Dillingham, William P (William Paul), 1843-1923
48
U.S. Commission on Immigration Reform
47
Blanchard, Pascal
44
Immigration Collection of Prescott Farnsworth Hall (Harvard College Library)
44
International Labour Office
44
Rosengarten Family Fund
44
Keith, Arthur Berriedale, 1879-1944
43
Center for Migration Studies (U.S.)
42
United States Bureau of Immigration
42
Massachusetts Institute of Technology Center for International Studies
41
Cambridge University Press
40
Canada Citizenship and Immigration Canada
40
Bade, Klaus J
39
Wihtol de Wenden, Catherine
39
Lucas, Charles Prestwood, Sir, 1853-1931
38
Egerton, Hugh Edward, 1855-1927
37
Bancel, Nicolas
36
Portes, Alejandro, 1944-
36
CIDOB (Center)
32
United Nations Department of Economic and Social Affairs. Population Division
32
United States Congress. Senate. Committee on the Judiciary
32
American Council of Learned Societies
31
Anne and Joseph Trachtman Memorial Book Fund
31
Castles, Stephen
31
Rand Corporation
31
United States Congress. House. Committee on the Judiciary
31
Zapata-Barrero, Ricard
31
Oltmer, Jochen
30
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