Ducks and drainage : relationships of drainage to waterfowl in the Prairie Pothole Region /

Bibliographic Details
Main Author:	Nord, Warren H.
Other Authors:	Evans, Charles D., Mann, Grady E.
Format:	Government Document Book
Language:	English
Published:	Washington, D.C. : U.S. Fish and Wildlife Service, Office of River Basin Studies, 195?
Subjects:	Waterfowl habitat > agricultural drainage impacts. Prairie Pothole Region > waterfowl habitat loss. Drainage impacts > waterfowl habitat management. Migratory birds > Conservation and protection.

Description
Item Description:	With eight fold-out maps and graphs.
Physical Description:	1, 86 pages