Author
Arnold & Porter
21
Risk Reduction Engineering Laboratory (U.S.)
12
United States. Environmental Protection Agency
11
Culinary Collection (University of Pennsylvania)
10
Chef Fritz Blank Culinary Archive and Library (University of Pennsylvania)
9
Covington & Burling
9
National Geographic Society (U.S.)
8
National Institute of Standards and Technology (U.S.). Office of Law Enforcement Standards
8
Antram, David, 1958-
7
Devroey, E. (Egide)
7
Gibbons, Gail
7
Ihde, Don, 1934-
7
Resources for the Future
7
United States. Environmental Protection Agency. Office of Solid Waste and Emergency Response
7
Alumni and Friends Memorial Book Fund
6
Anne and Joseph Trachtman Memorial Book Fund
6
Cleary, Brian P., 1959-
6
Epp, Dianne N.
6
Freymann, Saxton
6
Goneau, Martin
6
Gotham Book Mart Collection (University of Pennsylvania)
6
McCarthy, Meghan
6
National Institute of Justice (U.S.). Office of Science and Technology
6
Nelson, Jennifer K.
6
United States. Patent and Trademark Office
6
Berger, Melvin
5
Merrill, Yvonne Young
5
Museum of Modern Art (New York, N.Y.)
5
National Institute for Occupational Safety and Health
5
Appalachian Regional Commission
4
Berger, Gilda
4
Edward Potts Cheyney Memorial Fund
4
Elffers, Joost
4
Evans, Joy
4
Geological Survey (U.S.)
4
Gifford, Clive
4
Gonzalez, Rafael C.
4
Graham, Ian, 1953-
4
International Joint Commission
4
Lange, Dorothea
4
Learning Resources (Firm)
4
Miller, Edward, 1964-
4
Moore, Jo Ellen
4
National Institute of Justice (U.S.)
4
O'Brien, John, 1953-
4
Pennsylvania. Department of Environmental Resources
4
Research and Education Association
4
Rutherford, Brian
4
Salariya, David
4
Taylor, Robert D.
4
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