@article {32541,
	title = {Influence of roll-out mats and ridging on the establishment of plant cover on an unamended coal spoil : a progress report for 1979},
	volume = {ENR report 152, ENR Report T/20-79},
	year = {1980},
	pages = {42},
	institution = {Alberta Energy and Natural Resources, Forest Service},
	author = {Takyi, S. K.}
}
