@article {2403,
	title = {Traditional production system of the root of jalapa, <i>Ipomoea purga</i> (Convolvulaceae), in central Veracruz, Mexico},
	journal = {Economic Botany},
	volume = {48},
	number = {1},
	year = {1992},
	pages = {84-89},
	author = {Linajes, A. and Rico-Gray, V. and Carri{\'o}n, G.}
}
