@booklet {430,
	title = {The Use of Vegetation Maps and Geographic Information Systems for Assessing Conifer Lands in California},
	number = {91-23},
	year = {1991},
	publisher = {NCGIA},
	type = {Technical Report},
	author = {Goodchild, M. F. and Davis, F. W. and Painho, M. and Stoms, D. M.}
}
