@article {6860,
	title = {L_extension de Dittrichia graveolens en Belgique et dans la R{\'e}gion Nord _ Pas-de-Calais},
	journal = {Adoxa},
	volume = {22},
	year = {1999},
	month = {1999///},
	pages = {7 - 10},
	author = {J. Duvigneaud and J. Saintenoy-Simon}
}
