Geffen E, Mercure A, Girman DJ, Macdonald DW, Wayne RKSeptember 1992Journal article Journal:Journal of ZoologyVolume:228Issue:1, Wiley, pp.27 - 39No abstract availableKeywords:31 Biological Sciences , 3103 Ecology , 3104 Evolutionary Biology , 3105 Genetics DOI10.1111/j.1469-7998.1992.tb04430.x