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Keating MJ, Feldman JD.Keating MJ, et al. Among authors: feldman jd.Proc R Soc Lond B Biol Sci. 1975 Dec 16;191(1105):467-74. doi: 10.1098/rspb.1975.0139.Proc R Soc Lond B Biol Sci. 1975.PMID: 1778No abstract available.