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Primary view of Ecoregions of North America: After the Classification of J.M. Crowley
Bailey, Robert G.
June 1981
Primary view of Coal Surface Mining Reclamation and Fish and Wildlife Relationships in the Eastern United States, Volume 1: Past Findings, The Surface Mining Law of 1977 (P.L. 95-87), Planning and Management Considerations, and Information Sources
Leedy, Daniel L.
January 1981
Primary view of Coal Surface Mining Reclamation and Fish and Wildlife Relationships in the Eastern United States, Volume 2: Opportunities and Approaches for Fish and Wildlife Planning and management in Coal Surface Mining Reclamation and Postmining Land Uses
Leedy, Daniel L.
January 1981
Primary view of Atlas of Coal/Minerals and Important Resource Problem Areas for Fish and Wildlife in the Conterminous United States
Honig, Robert A.; Olson, R. J. & Mason, William T., Jr.
July 1981
Primary view of National Coastal Ecological Research : Existing and Proposed Energy Developments
Gordon, Sharon L.; Lundblad, Herbert L. & Westcott, Carol A.
January 1981
Primary view of Birds of the St. Croix River Valley: Minnesota and Wisconsin
Faanes, Craig A.
1981
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