Author
Films for the Humanities & Sciences (Firm)
2
Infobase
2
Orr, David W., 1944-
2
United States. National Park Service. Natural Resource Stewardship and Science,
2
Bruun, Ole, 1953-
1
Casse, Thorkil
1
Comiskey, J. A.
1
Knight, Paul (Meteorologist),
1
Marshall, Matt,
1
National Geographic Television & Film
1
Public Broadcasting Service (U.S.)
1
Skancke, Jennie R.,
1
Soeder, D. J.
1
SpringerLink (Online Service)
1
SpringerLink (Online service)
1
United States. Congress. Senate. Committee on Environment and Public Works
1