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Author/Creator
- Safari Books Online (Firm)232
- ebrary, Inc202
- Dallas TeleLearning (Firm), production company161
- SpringerLink (Online service)110
- Films for the Humanities & Sciences (Firm)73
- Infobase73
- United States. Internal Revenue Service69
- International Business Machines Corporation. International Technical Support Organization63
- ProQuest (Firm)48
- United States44
- Teletime Video, Inc., production company34
- Safari, an O'Reilly Media Company26
- Klein, William A.24
- Infobase, film distributor23
- Library of Congress. Congressional Research Service, issuing body23
- John Wiley & Sons, production company21
- United States. Congress. Senate. Committee on Finance21
- Cable News Network, production company20
- Oxford University Press20
- United States. Bureau of the Census20