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

Year Number of Results
1983 1
1993 1
2000 1
2003 1
2014 1
2015 2
2019 1
2020 2
2021 1
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Page 1
Crop Species Diversity Changes in the United States: 1978-2012.
Aguilar J, Gramig GG, Hendrickson JR, Archer DW, Forcella F, Liebig MA. Aguilar J, et al. Among authors: forcella f. PLoS One. 2015 Aug 26;10(8):e0136580. doi: 10.1371/journal.pone.0136580. eCollection 2015. PLoS One. 2015. PMID: 26308552 Free PMC article.
Relative abundance in an alien weed flora.
Forcella F, Harvey SJ. Forcella F, et al. Oecologia. 1983 Sep;59(2-3):292-295. doi: 10.1007/BF00378851. Oecologia. 1983. PMID: 28310247