Vascular plants of Minnesota a checklist and atlas / [electronic resource] :
Gerald B. Ownbey and Thomas Morley.
- Minneapolis : University of Minnesota Press, c1991.
- x, 306 p. : maps.
Includes bibliographical references and index.
Electronic reproduction. Palo Alto, Calif. : ebrary, 2008. Available via World Wide Web. Access may be limited to ebrary affiliated libraries.