@article {17,
	title = {A comparison of the taxonomic richness of temperate plants in East Asia and North America},
	journal = {American Journal of BotanyAmerican Journal of Botany},
	volume = {89},
	number = {11},
	year = {2002},
	pages = {1818-1825},
	isbn = {0002-9122},
	author = {Qian, Hong}
}
