@book{49179,
	author = {Verkroost, M.},
	title = {The effecto of ozone on photosynthesis and respiration of Scenedesmus obtusiusculus chod., with a general discussion of effects of air pollution in plants},
	publisher = {Veenmen & Zonen,},
	year = {1974},
	series = {Mededelingen Landbouwhogeschool},
	address = {Wageningen :}
}