@book{68808,
	author = {Struik, P. C.},
	title = {The effects of switches in photoperiod on crop' morphology production and quality of forage maize (Zea mays L.) field conditions under},
	publisher = {Veeman & Zonen,},
	year = {1983},
	series = {Mededelingen landbouwhogechool},
	address = {Wageningen :},
	note = {31-205}
}