@inbook {1709,
	title = {Indigenous and cultivated plants as bioindicators},
	booktitle = {Biologic Markers of Air-Pollution Stress and Damage in Forests},
	year = {1989},
	pages = {194-204},
	publisher = {National Academy Press},
	organization = {National Academy Press},
	address = {Washington DC},
	author = {Weinstein, L.H. and Laurence, J.A.}
}
