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Table representation of search results timeline featuring number of search results per year.

Year Number of Results
1964 1
1968 1
1974 1
1977 1
1984 1
1985 1
1986 2
1987 1
1988 5
1989 4
1990 2
1991 1
1992 4
1994 9
1995 28
1996 30
1997 35
1998 55
1999 66
2000 130
2001 186
2002 188
2003 195
2004 273
2005 339
2006 502
2007 411
2008 410
2009 410
2010 395
2011 566
2012 617
2013 587
2014 590
2015 488
2016 496
2017 398
2018 401
2019 227
2020 13
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Publication date

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7,107 results
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Page 1
The pipe model theory half a century on: a review.
Lehnebach R, Beyer R, Letort V, Heuret P. Lehnebach R, et al. Ann Bot. 2018 Apr 18;121(5):773-795. doi: 10.1093/aob/mcx194. Ann Bot. 2018. PMID: 29370362 Free PMC article. Review.
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