@article {1704,
	title = {The Northwest European pollen flora: 28. Convolvulaceae.},
	journal = {Rev. Palaeobot. Palynol.},
	volume = {33},
	year = {1981},
	note = {English},
	pages = {117-135},
	keywords = {chromosome numbers, palynology},
	author = {Cronk, Q. C. B. and Clarke, G. C. S.}
}
