Author
Research Publications, inc
376
Royal College of Physicians of London
263
R.L. Polk & Co
228
Geo. A. Ogle & Co
185
Foundation Center
175
Gotham Book Mart Collection (University of Pennsylvania)
161
United States Central Intelligence Agency. Directorate of Intelligence
140
Peterson's Guides, Inc
136
United States Office of Education
135
United States Health Care Financing Administration
131
National Foreign Assessment Center (U.S.)
127
United States Central Intelligence Agency
120
Athenaeum of Philadelphia
115
National Center for Education Statistics
97
Educational Resources Information Center (U.S.)
94
Longworth, David, 1765?-1821
94
Gale Research Company
92
Gale Research Inc
90
Council of State Governments
88
Peterson's (Firm)
88
ebrary, Inc
87
United States Office of Educational Research and Improvement
80
United States Postal Service Address Information Systems Division
80
Organisation for Economic Co-operation and Development Development Centre
79
Adam Matthew Digital (Firm)
78
Technical Assistance Information Clearing House
76
American Medical Association
73
Unesco Science Cooperation Office for Latin America
73
United States Administration on Aging
73
Robinson, James
71
United States Postal Service Office of Address Information Systems
71
Child, Hamilton, 1836-
69
Rosengarten Family Fund
68
United States Bureau of Labor Statistics
68
United States National Park Service
68
Standard Rate & Data Service
67
Plunkett Research, Ltd
63
Standard and Poor's Corporation
61
United States Postal Service Customer and Automation Services Department
61
John W. Hartman Center for Sales, Advertising & Marketing History
60
United States Bureau of International Labor Affairs
60
United States International Trade Administration
60
Princeton Review (Firm)
59
United States Environmental Protection Agency
59
National Institutes of Health (U.S.)
58
Commission of the European Communities
57
United States Department of Education
57
Market Data Retrieval (Firm)
56
National Agricultural Library (U.S.)
56
Directory Service Company
55
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