a production of Public Affairs Television, Inc. ; written by Bill Moyers, David Brancaccio, Judy Stoeven Davies ; directed by Mark Ganguzza ; a presentation of Thirteen/WNET New York
from Department of Agricultural Journalism College of Agricultural & Life Sciences University of Wisconsin--Madison ; filmmaker, Wolfgang Hoffmann ; writers, Bill Keenan, Michael Major
a presentation of Science Museum of Minnesota, Science North and Discovery Place in cooperation with the Jane Goodall Institute with funding from Bank of America and National Science Foundation ; producer, David Lickley ; writer, Stephen Low ; director, David Lickley
produced in partnership by Wisconsin Dept. of Natural Resources Fisheries Management & Water Resources Mgmt. ; a video production of Wisconsin Dept. of Natural Resources Bureau of Information and Education
[presented by] University of Wisconsin--Extension, Chaska Chemical Co., Inc., Friday Canning Corporation ; produced by Joseph Seitz ; directed by Steve Ingham
director/producer, John Edginton ; producers, Gillian Darling, Jack Silberman, George Johnson ; a Sarus/Otmoor production in co-production with the National Film Board of Canada and Channel Four Television ; in association with the Knowledge Network ... [and others]