@book{53525,
	author = {Wertheim, S. J.},
	title = {The drop of flowers and fruits in apple, with special reference to the june drop of Cox's orange pippin and its control with growth regulators},
	publisher = {Veenman & Zonen,},
	year = {1971},
	series = {Mededelingen Landbouwhogeschool},
	address = {Wageningen :}
}