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Evaluation of the Bird Conservation Area Concept in the Northern Tallgrass Pairie

其他書名	Annual Report: 1999
出版	U.S. Geological Survey, Northern Prairie Wildlife Research Center, 1999
URL	http://books.google.com.hk/books?id=HUi-jwEACAAJ&hl=&source=gbs_api

註釋Features the full text of a report entitled "Evaluation of the Bird Conservation Area Concept in the Northern Tallgrass Prairie," provided by the Northern Prairie Wildlife Research Center of the United States Geological Survey (USGS). Discusses the concept that bird conservation areas can maintain populations of breeding grassland birds. Highlights the objectives, study areas, methods of research, and results.