@book{47345,
	author = {Van de Westeringh, W.},
	title = {Soil conditions, soil carbonates and fermer vegetation in the Geul Valley from Gulpen to Meerssen, South Limburg, the Netherlands.},
	publisher = {Veenan & Zonen,},
	year = {1980.},
	series = {Mededelingen Landbouwhogeschool},
	address = {Wageningen :}
}