We found a matchYour institution may have access to this item. Find your institution then sign in to continue.TitlePopulation diversity: its extent and extinction.AuthorsHughes JB; Daily GC; Ehrlich PRPublicationScience (New York, N.Y.), 1997, Vol 278, Issue 5338, p689ISSN0036-8075Publication typearticleDOI10.1126/science.278.5338.689