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By: Persinos, G. J. - Christie, S.K. - Bidinger, J.M. - Lapiana, M.J.Type: ArticleIn: Journal of the Arnold ArboretumVolume: 51Series:Issue: 4Date: 1970Page Range: 540-546Publication Info: Cambridge, Mass Arnold Arboretum, Harvard University [etc.] 1919-Subjects: