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Author/Creator
- Films for the Humanities & Sciences (Firm)75
- Infobase75
- Centers for Disease Control and Prevention (U.S.)57
- ABC International27
- United States. Congress. House22
- Gorgas Memorial Institute of Tropical and Preventive Medicine20
- Gorgas Memorial Laboratory20
- Centers for Disease Control (U.S.)12
- ebrary, Inc10
- SpringerLink (Online service)8
- World Health Organization8
- BBC Worldwide Ltd5
- Schoenberg, Bruce S., 1942-5
- United States. General Accounting Office5
- Information Television Network4
- Library of Congress. Congressional Research Service4
- National Institutes of Health (U.S.)4
- Oxford University Press4
- United States4
- United States. Congress. Senate4