@book{47451,
	author = {Van Holsteijn, H. M. C.},
	title = {Photosynthesis of lettuce},
	publisher = {Veenman & Zonen,},
	year = {1981},
	address = {Wageningen :},
	note = {La biblioteca tiene: v.1 Results with cultivar Amanda plus.- v.2 Results with Butterhead, cos-and Iveberg lecttuce cultivas}
}