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A proposed framework for delineating ecologically-based planning,implementation, and evaluation units for cooperative bird conservation in the U.S. / Commission for Environmental Cooperation.

By: Material type: TextTextPublication details: Commission for Environmental Cooperation, 1999Description: 1 v. (various pagings) : 3 maps (col.) ; 28 cmISBN:
  • 292230518x : Ecological regions of North America
  • 9782922305180 : Ecological regions of North America
Subject(s): Online resources:

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