Research topic:perennial

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perennial

The Concise Oxford Dictionary of English Etymology | 1996 | | © The Concise Oxford Dictionary of English Etymology 1996, originally published by Oxford University Press 1996. (Hide copyright information) Copyright

perennial XVII. f. L. perennis, f. PER-1 + annus year; see -IAL.

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T. F. HOAD. "perennial." The Concise Oxford Dictionary of English Etymology. 1996. Encyclopedia.com. 23 Dec. 2009 <http://www.encyclopedia.com>.

T. F. HOAD. "perennial." The Concise Oxford Dictionary of English Etymology. 1996. Encyclopedia.com. (December 23, 2009). http://www.encyclopedia.com/doc/1O27-perennial.html

T. F. HOAD. "perennial." The Concise Oxford Dictionary of English Etymology. 1996. Retrieved December 23, 2009 from Encyclopedia.com: http://www.encyclopedia.com/doc/1O27-perennial.html

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perennial
Book article from: The Columbia Encyclopedia, Sixth Edition ...Cumming and R. E. Lee, Contemporary Perennials (1960); J. U. Crockett, Perennials (1972); A. M. Armitage, Herbaceous Perennial Plants (1989); R. R. Clausen and N. H. Ekstrom, Perennials for American Gardens (1989); P...
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