Nature · 1969 · 112 citations · 1 references
Life SciencesEvolutionary BiologyZoologyOrnithologyPhylogeneticsSpeciationAllopatric SpeciationBird EcologyBird EvolutionBird PaleontologyBird SystematicsSpeciation In AnimalsAvian PaleocommunitiesAvian PaleoecologyAvian PhylogeneticsAvian PhylogenyOrigin Of BirdsPleistocene SpeciationSpeciation In Birds
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Observations on the Snow Line in the Peruvian Andes
Stefan Hastenrath · Journal of Glaciology · 1967 · 33 citations · Full text