@article {14497,
	title = {毛白杨的一个新变型{\textemdash}易县毛白杨/A new forma of Populus tomentosa from Hebei},
	journal = {植物研究/Bulletin of Botanical Research},
	volume = {9},
	year = {1989},
	author = {Jiang Huei-ming and Huang Jin-xiang}
}
