Species concepts and the Endangered Species Act: How a valid biological definition of species enhances the legal protection of biodiversity Author George A., Mayden R. Journal/Series Natural Resources Journal | Vol. 45(2); 369 - 407; 39 p. Date 2005 Source IUCN (ID: ANA-074568) Publisher | Place of publication University of New Mexico School of Law | Albuquerque, NM, USA Document type Article in periodical Language English Country/Territory United States of America Subject Wild species & ecosystems Keyword Endangered species Policy/planning Research