@book{13259,
	author = {Van Hintum, Th. J. L. and Frese, L.},
	title = {Crop networks},
	publisher = {International Board for Plant Genetic Resources,},
	year = {1991},
	series = {International crop network series},
	address = {Rome :},
	note = {Papers of the EUCARPIA/IBPGR symposium held at Wageningen, The Netherlands, 1990}
}