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	title = {Senecio cineraria DC. x S. erucifolius L},
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	year = {1979},
	month = {1979///},
	pages = {333 - 334},
	author = {R.M. Burton}
}
@article {8024,
	title = {Bidens in Britain},
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	volume = {58},
	year = {1979},
	month = {1979///},
	pages = {9 - 14},
	author = {R.M. Burton}
}
@article {8025,
	title = {The present distribution of Guernsey Fleabane, Conyza sumatrensis, in the London area},
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	volume = {74},
	year = {1995},
	month = {1995///},
	pages = {169 - 176},
	author = {R.M. Burton}
}
@article {7325,
	title = {Bidens connata},
	journal = {BSBI News},
	volume = {18},
	year = {1978},
	month = {1978///},
	pages = {15 - 16},
	author = {R.M. Burton}
}
