@book{47449,
	author = {Van Holsteijn, H. M. C.},
	title = {Growth of lettuce},
	publisher = {Veenman & Zonen,},
	year = {1980},
	series = {Mededelingen Landbouwhogeschool},
	address = {Wageningen :},
	note = {La biblioteca tiene: v.1 Covering of soil surface}
}