Butterflies of North America [electronic resource] /
Stanford, Ray E.(Ray Edmund)
Opler, Paul A.
Pavulaan, Harry.
Northern Prairie Science Center (U.S.)
Northern Prairie Wildlife Research Center.
Jamestown, ND : Northern Prairie Science Center,
[1995-
Text, distribution maps, and images of butterflies from the United States and northern Mexico. Additions for Canada are planned.
Mode of access: World Wide Web.
Title from Web page (last viewed on Feb. 18, 2000).
Published: Northern Prairie Wildlife Research Center, 1997-
Text, distribution maps, and images of butterflies from the United States and northern Mexico. Additions for Canada are planned.
Includes bibliographical references.
Butterflies