Author
Lian xiang ji tuan (China)
60
Learning Resources (Firm)
16
Nasco (Firm : U.S.)
12
Crusader Education (Firm)
10
Lakeshore Learning Materials (Firm)
8
Sunpak (Firm)
7
Pennsylvania Cable Network
5
Buhr, Sharon E.
4
Young People's Healthy Heart Program
4
American Educational Products
3
American Petroleum Institute
3
Apple Computer, Inc
3
Delta Education (Firm)
3
Society of Photo-optical Instrumentation Engineers
3
David & Sanford
2
Tiffen Company
2
United States. National Aeronautics and Space Administration
2
Zinn, Lauren Isenberg
2
Agence nationale pour la gestion des déchets radioactifs
1
Alley, Richard B.
1
Aluminum Association
1
Ambrose Video Publishing
1
American Coal Foundation
1
American National Standards Institute
1
Anoka-Hennepin Independent School District No. 11 (Minn.). Department of Curriculum and Instruction
1
Aristoplay, Ltd
1
Basu, Santanu
1
Blue Microphones
1
Bobicki, E. R.
1
Boulanger, J. F.
1
Boyle, George (Photographer)
1
Burke, James, 1936-
1
Canadian Institute of Mining, Metallurgy and Petroleum
1
Carvallo, Andres
1
Cat Hollow Films (Firm)
1
Cherkaev, Andrej, 1950-
1
Constructive Playthings (Firm)
1
Cook, Elin K.
1
Cooper, John
1
Corley, W. G. (William Gene)
1
Darchuk, James M.
1
Day, James M.
1
Decalf, Jérémie
1
Dugan, Roger C.
1
Easto, Jessica
1
Educational Insights (Firm)
1
Elinson, Zusha, 1980-
1
Faller, Don
1
First-Run Features (Firm)
1
Foster, Stacey
1
more ...