Farm ponds work for wildlife [electronic resource] / produced by U.S. Geological Survey, Upper Midwest Environmental Sciences Center ; funding provided through the Minnesota Environment and Natural Resources Trust Fund ... and in cooperation with ... USDA Natural Resources Conservation Service ... [et al.].
Imprint
[La Crosse, Wis.] : U.S. Dept. of the Interior, U.S. Geological Survey, Upper Midwest Environmental Sciences Center, [2002]